1097997868 has 24 divisors (see below), whose sum is σ = 2101740480. Its totient is φ = 497765520.

The previous prime is 1097997863. The next prime is 1097997877. The reversal of 1097997868 is 8687997901.

It is not an unprimeable number, because it can be changed into a prime (1097997863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16246 + ... + 49597.

It is an arithmetic number, because the mean of its divisors is an integer number (87572520).

Almost surely, 2^1097997868 is an apocalyptic number.

It is an amenable number.

1097997868 is a deficient number, since it is larger than the sum of its proper divisors (1003742612).

1097997868 is a wasteful number, since it uses less digits than its factorization.

1097997868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66237 (or 66235 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 64.

The square root of 1097997868 is about 33136.0508811777. The cubic root of 1097997868 is about 1031.6534438687.

The spelling of 1097997868 in words is "one billion, ninety-seven million, nine hundred ninety-seven thousand, eight hundred sixty-eight".