164312538 has 32 divisors (see below), whose sum is σ = 355488000. Its totient is φ = 50331456.

The previous prime is 164312441. The next prime is 164312539. The reversal of 164312538 is 835213461.

It is a super-2 number, since 2×164312538² = 53997220288002888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164312499 and 164312508.

It is not an unprimeable number, because it can be changed into a prime (164312539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13263 + ... + 22461.

It is an arithmetic number, because the mean of its divisors is an integer number (11109000).

Almost surely, 2^164312538 is an apocalyptic number.

164312538 is an abundant number, since it is smaller than the sum of its proper divisors (191175462).

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

164312538 is a wasteful number, since it uses less digits than its factorization.

164312538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9446.

The product of its digits is 17280, while the sum is 33.

The square root of 164312538 is about 12818.4452255334. The cubic root of 164312538 is about 547.7178582965.

Adding to 164312538 its reverse (835213461), we get a palindrome (999525999).

The spelling of 164312538 in words is "one hundred sixty-four million, three hundred twelve thousand, five hundred thirty-eight".