164716931 has 2 divisors, whose sum is σ = 164716932. Its totient is φ = 164716930.

The previous prime is 164716921. The next prime is 164716949. The reversal of 164716931 is 139617461.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (139617461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164716931 is a prime.

It is a super-2 number, since 2×164716931² = 54263334716117522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164716921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82358465 + 82358466.

It is an arithmetic number, because the mean of its divisors is an integer number (82358466).

Almost surely, 2^164716931 is an apocalyptic number.

164716931 is a deficient number, since it is larger than the sum of its proper divisors (1).

164716931 is an equidigital number, since it uses as much as digits as its factorization.

164716931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 164716931 is about 12834.2094029979. The cubic root of 164716931 is about 548.1668234442.

The spelling of 164716931 in words is "one hundred sixty-four million, seven hundred sixteen thousand, nine hundred thirty-one".