159197868 has 36 divisors (see below), whose sum is σ = 411779368. Its totient is φ = 51831360.

The previous prime is 159197851. The next prime is 159197891. The reversal of 159197868 is 868791951.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×159197868² = 50687922351490848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49873 + ... + 52968.

Almost surely, 2^159197868 is an apocalyptic number.

159197868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

159197868 is an abundant number, since it is smaller than the sum of its proper divisors (252581500).

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

159197868 is a wasteful number, since it uses less digits than its factorization.

159197868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102894 (or 102889 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 54.

The square root of 159197868 is about 12617.3637500074. The cubic root of 159197868 is about 541.9747858443.

The spelling of 159197868 in words is "one hundred fifty-nine million, one hundred ninety-seven thousand, eight hundred sixty-eight".