1957331912 has 8 divisors (see below), whose sum is σ = 3669997350. Its totient is φ = 978665952.

The previous prime is 1957331891. The next prime is 1957331939. The reversal of 1957331912 is 2191337591.

It can be written as a sum of positive squares in only one way, i.e., 1700242756 + 257089156 = 41234^2 + 16034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1957331912² = 7662296427467151488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1957331912.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122333237 + ... + 122333252.

Almost surely, 2^1957331912 is an apocalyptic number.

It is an amenable number.

1957331912 is a deficient number, since it is larger than the sum of its proper divisors (1712665438).

1957331912 is a wasteful number, since it uses less digits than its factorization.

1957331912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244666495 (or 244666491 counting only the distinct ones).

The product of its digits is 51030, while the sum is 41.

The square root of 1957331912 is about 44241.7439981744. The cubic root of 1957331912 is about 1250.8968309615.

The spelling of 1957331912 in words is "one billion, nine hundred fifty-seven million, three hundred thirty-one thousand, nine hundred twelve".