9257981972 has 36 divisors (see below), whose sum is σ = 16508249940. Its totient is φ = 4542607104.

The previous prime is 9257981927. The next prime is 9257981987. The reversal of 9257981972 is 2791897529.

It can be written as a sum of positive squares in 2 ways, for example, as 4149163396 + 5108818576 = 64414^2 + 71476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5174054 + ... + 5175842.

Almost surely, 2^9257981972 is an apocalyptic number.

It is an amenable number.

9257981972 is a deficient number, since it is larger than the sum of its proper divisors (7250267968).

9257981972 is a wasteful number, since it uses less digits than its factorization.

9257981972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2011 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 59.

The square root of 9257981972 is about 96218.4076567473. The cubic root of 9257981972 is about 2099.7718551849.

It can be divided in two parts, 925 and 7981972, that added together give a palindrome (7982897).

The spelling of 9257981972 in words is "nine billion, two hundred fifty-seven million, nine hundred eighty-one thousand, nine hundred seventy-two".