1097870988 has 24 divisors (see below), whose sum is σ = 2571912000. Its totient is φ = 364498000.

The previous prime is 1097870971. The next prime is 1097871007. The reversal of 1097870988 is 8890787901.

It is a super-2 number, since 2×1097870988² = 2410641412584192288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179238 + ... + 185261.

It is an arithmetic number, because the mean of its divisors is an integer number (107163000).

Almost surely, 2^1097870988 is an apocalyptic number.

It is an amenable number.

1097870988 is an abundant number, since it is smaller than the sum of its proper divisors (1474041012).

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

1097870988 is a wasteful number, since it uses less digits than its factorization.

1097870988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364757 (or 364755 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 57.

The square root of 1097870988 is about 33134.1362947640. The cubic root of 1097870988 is about 1031.6137044985.

The spelling of 1097870988 in words is "one billion, ninety-seven million, eight hundred seventy thousand, nine hundred eighty-eight".