9251988972 has 48 divisors (see below), whose sum is σ = 23338371840. Its totient is φ = 2842713792.

The previous prime is 9251988961. The next prime is 9251988973. The reversal of 9251988972 is 2798891529.

It is not an unprimeable number, because it can be changed into a prime (9251988973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539928 + ... + 556799.

It is an arithmetic number, because the mean of its divisors is an integer number (486216080).

Almost surely, 2^9251988972 is an apocalyptic number.

It is an amenable number.

9251988972 is an abundant number, since it is smaller than the sum of its proper divisors (14086382868).

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

9251988972 is a wasteful number, since it uses less digits than its factorization.

9251988972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096790 (or 1096788 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 60.

The square root of 9251988972 is about 96187.2599256263. The cubic root of 9251988972 is about 2099.3186733045.

The spelling of 9251988972 in words is "nine billion, two hundred fifty-one million, nine hundred eighty-eight thousand, nine hundred seventy-two".