1386983333840 has 40 divisors (see below), whose sum is σ = 3472792888488. Its totient is φ = 512116922880.

The previous prime is 1386983333839. The next prime is 1386983333873. The reversal of 1386983333840 is 483333896831.

It can be written as a sum of positive squares in 4 ways, for example, as 315228348304 + 1071754985536 = 561452^2 + 1035256^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1386983333840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666817871 + ... + 666819950.

Almost surely, 2^{1386983333840} is an apocalyptic number.

1386983333840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386983333840 is an abundant number, since it is smaller than the sum of its proper divisors (2085809554648).

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

1386983333840 is a wasteful number, since it uses less digits than its factorization.

1386983333840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333637847 (or 1333637841 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 59.

The spelling of 1386983333840 in words is "one trillion, three hundred eighty-six billion, nine hundred eighty-three million, three hundred thirty-three thousand, eight hundred forty".