981576988 has 48 divisors (see below), whose sum is σ = 1996614144. Its totient is φ = 413542080.

The previous prime is 981576983. The next prime is 981576989. The reversal of 981576988 is 889675189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981576983) 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, 1118806 + ... + 1119682.

It is an arithmetic number, because the mean of its divisors is an integer number (41596128).

Almost surely, 2^981576988 is an apocalyptic number.

It is an amenable number.

981576988 is an abundant number, since it is smaller than the sum of its proper divisors (1015037156).

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

981576988 is a wasteful number, since it uses less digits than its factorization.

981576988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1520 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 61.

The square root of 981576988 is about 31330.1290772955. The cubic root of 981576988 is about 993.8208932824.

The spelling of 981576988 in words is "nine hundred eighty-one million, five hundred seventy-six thousand, nine hundred eighty-eight".