164812931 has 2 divisors, whose sum is σ = 164812932. Its totient is φ = 164812930.

The previous prime is 164812919. The next prime is 164812969. The reversal of 164812931 is 139218461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164812931 - 2⁶ = 164812867 is a prime.

It is a super-2 number, since 2×164812931² = 54326604449621522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 164812891 and 164812900.

It is not a weakly prime, because it can be changed into another prime (164818931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82406465 + 82406466.

It is an arithmetic number, because the mean of its divisors is an integer number (82406466).

Almost surely, 2^164812931 is an apocalyptic number.

164812931 is a deficient number, since it is larger than the sum of its proper divisors (1).

164812931 is an equidigital number, since it uses as much as digits as its factorization.

164812931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 164812931 is about 12837.9488626494. The cubic root of 164812931 is about 548.2732966011.

The spelling of 164812931 in words is "one hundred sixty-four million, eight hundred twelve thousand, nine hundred thirty-one".