1312650444 has 48 divisors (see below), whose sum is σ = 3706311168. Its totient is φ = 352981248.

The previous prime is 1312650419. The next prime is 1312650487. The reversal of 1312650444 is 4440562131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458184 + ... + 461039.

It is an arithmetic number, because the mean of its divisors is an integer number (77214816).

Almost surely, 2^1312650444 is an apocalyptic number.

1312650444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1312650444 is an abundant number, since it is smaller than the sum of its proper divisors (2393660724).

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

1312650444 is a wasteful number, since it uses less digits than its factorization.

1312650444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919254 (or 919252 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1312650444 is about 36230.5181304380. The cubic root of 1312650444 is about 1094.9216165405.

The spelling of 1312650444 in words is "one billion, three hundred twelve million, six hundred fifty thousand, four hundred forty-four".