163976872 has 16 divisors (see below), whose sum is σ = 312046560. Its totient is φ = 80764464.

The previous prime is 163976837. The next prime is 163976881. The reversal of 163976872 is 278679361.

It is a happy number.

It is a super-3 number, since 3×163976872³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152428 + ... + 153499.

It is an arithmetic number, because the mean of its divisors is an integer number (19502910).

Almost surely, 2^163976872 is an apocalyptic number.

It is an amenable number.

163976872 is a deficient number, since it is larger than the sum of its proper divisors (148069688).

163976872 is a wasteful number, since it uses less digits than its factorization.

163976872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306000 (or 305996 counting only the distinct ones).

The product of its digits is 762048, while the sum is 49.

The square root of 163976872 is about 12805.3454463361. The cubic root of 163976872 is about 547.3446354128.

The spelling of 163976872 in words is "one hundred sixty-three million, nine hundred seventy-six thousand, eight hundred seventy-two".