981522992 has 20 divisors (see below), whose sum is σ = 1963046976. Its totient is φ = 474930240.

The previous prime is 981522989. The next prime is 981523007. The reversal of 981522992 is 299225189.

981522992 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988943 + ... + 989934.

Almost surely, 2^981522992 is an apocalyptic number.

It is an amenable number.

981522992 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

981522992 is a wasteful number, since it uses less digits than its factorization.

981522992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978916 (or 1978910 counting only the distinct ones).

The product of its digits is 233280, while the sum is 47.

The square root of 981522992 is about 31329.2673390234. The cubic root of 981522992 is about 993.8026697715.

The spelling of 981522992 in words is "nine hundred eighty-one million, five hundred twenty-two thousand, nine hundred ninety-two".