159866920 has 32 divisors (see below), whose sum is σ = 361156320. Its totient is φ = 63688000.

The previous prime is 159866897. The next prime is 159866947. The reversal of 159866920 is 29668951.

It is a super-2 number, since 2×159866920² = 51114864220572800, 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, 2079 + ... + 18001.

It is an arithmetic number, because the mean of its divisors is an integer number (11286135).

Almost surely, 2^159866920 is an apocalyptic number.

159866920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159866920 is an abundant number, since it is smaller than the sum of its proper divisors (201289400).

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

159866920 is a wasteful number, since it uses less digits than its factorization.

159866920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16185 (or 16181 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 159866920 is about 12643.8490974861. The cubic root of 159866920 is about 542.7329671127.

The spelling of 159866920 in words is "one hundred fifty-nine million, eight hundred sixty-six thousand, nine hundred twenty".