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1369109792 = 253122112
BaseRepresentation
bin101000110011010…
…1111010100100000
310112102012222120002
41101212233110200
510300443003132
6343504435132
745633145511
oct12146572440
93472188502
101369109792
116429104a6
12322618aa8
1318a85454b
14cdb90a08
15802e2262
hex519af520

1369109792 has 54 divisors (see below), whose sum is σ = 2798451747. Its totient is φ = 659332800.

The previous prime is 1369109783. The next prime is 1369109813. The reversal of 1369109792 is 2979019631.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 684554896 + 684554896 = 26164^2 + 26164^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=26164.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6488567 + ... + 6488777.

Almost surely, 21369109792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1369109792

1369109792 is an abundant number, since it is smaller than the sum of its proper divisors (1429341955).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1369109792 is an frugal number, since it uses more digits than its factorization.

1369109792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 1369109792 is about 37001.4836459297. The cubic root of 1369109792 is about 1110.3999294765.

The spelling of 1369109792 in words is "one billion, three hundred sixty-nine million, one hundred nine thousand, seven hundred ninety-two".

Divisors: 1 2 4 8 16 31 32 62 124 211 248 422 496 844 961 992 1688 1922 3376 3844 6541 6752 7688 13082 15376 26164 30752 44521 52328 89042 104656 178084 202771 209312 356168 405542 712336 811084 1380151 1424672 1622168 2760302 3244336 5520604 6488672 11041208 22082416 42784681 44164832 85569362 171138724 342277448 684554896 1369109792