981692972 has 12 divisors (see below), whose sum is σ = 1850113776. Its totient is φ = 453089040.

The previous prime is 981692953. The next prime is 981692993. The reversal of 981692972 is 279296189.

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, 9439304 + ... + 9439407.

It is an arithmetic number, because the mean of its divisors is an integer number (154176148).

Almost surely, 2^981692972 is an apocalyptic number.

It is an amenable number.

981692972 is a deficient number, since it is larger than the sum of its proper divisors (868420804).

981692972 is a wasteful number, since it uses less digits than its factorization.

981692972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18878728 (or 18878726 counting only the distinct ones).

The product of its digits is 979776, while the sum is 53.

The square root of 981692972 is about 31331.9800204200. The cubic root of 981692972 is about 993.8600353243.

The spelling of 981692972 in words is "nine hundred eighty-one million, six hundred ninety-two thousand, nine hundred seventy-two".