164886831 has 12 divisors (see below), whose sum is σ = 239099952. Its totient is φ = 109495296.

The previous prime is 164886809. The next prime is 164886847. The reversal of 164886831 is 138688461.

It is a happy number.

It is not a de Polignac number, because 164886831 - 2⁷ = 164886703 is a prime.

It is a super-2 number, since 2×164886831² = 54375334074445122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164886881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33331 + ... + 37956.

It is an arithmetic number, because the mean of its divisors is an integer number (19924996).

Almost surely, 2^164886831 is an apocalyptic number.

164886831 is a deficient number, since it is larger than the sum of its proper divisors (74213121).

164886831 is a wasteful number, since it uses less digits than its factorization.

164886831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71550 (or 71547 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 164886831 is about 12840.8267257214. The cubic root of 164886831 is about 548.3552305895.

The spelling of 164886831 in words is "one hundred sixty-four million, eight hundred eighty-six thousand, eight hundred thirty-one".