431644164 has 48 divisors (see below), whose sum is σ = 1154391168. Its totient is φ = 122969088.

The previous prime is 431644159. The next prime is 431644181. The reversal of 431644164 is 461446134.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22374 + ... + 36930.

It is an arithmetic number, because the mean of its divisors is an integer number (24049816).

Almost surely, 2^431644164 is an apocalyptic number.

It is an amenable number.

431644164 is an abundant number, since it is smaller than the sum of its proper divisors (722747004).

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

431644164 is a wasteful number, since it uses less digits than its factorization.

431644164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14924 (or 14922 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 431644164 is about 20776.0478436107. The cubic root of 431644164 is about 755.7450149289.

The spelling of 431644164 in words is "four hundred thirty-one million, six hundred forty-four thousand, one hundred sixty-four".