164442931 has 2 divisors, whose sum is σ = 164442932. Its totient is φ = 164442930.

The previous prime is 164442917. The next prime is 164442937. The reversal of 164442931 is 139244461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164442931 - 2⁹ = 164442419 is a prime.

It is a super-2 number, since 2×164442931² = 54082955111741522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164442937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82221465 + 82221466.

It is an arithmetic number, because the mean of its divisors is an integer number (82221466).

Almost surely, 2^164442931 is an apocalyptic number.

164442931 is a deficient number, since it is larger than the sum of its proper divisors (1).

164442931 is an equidigital number, since it uses as much as digits as its factorization.

164442931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 164442931 is about 12823.5303641392. The cubic root of 164442931 is about 547.8627035856.

The spelling of 164442931 in words is "one hundred sixty-four million, four hundred forty-two thousand, nine hundred thirty-one".