164631216 has 40 divisors (see below), whose sum is σ = 425956864. Its totient is φ = 54792000.

The previous prime is 164631209. The next prime is 164631227. The reversal of 164631216 is 612136461.

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 7 ways as a sum of consecutive naturals, for example, 33765 + ... + 38331.

Almost surely, 2^164631216 is an apocalyptic number.

164631216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164631216 is an abundant number, since it is smaller than the sum of its proper divisors (261325648).

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

164631216 is a wasteful number, since it uses less digits than its factorization.

164631216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329 (or 5323 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 164631216 is about 12830.8696509629. The cubic root of 164631216 is about 548.0717223688.

Adding to 164631216 its reverse (612136461), we get a palindrome (776767677).

The spelling of 164631216 in words is "one hundred sixty-four million, six hundred thirty-one thousand, two hundred sixteen".