164449231 has 2 divisors, whose sum is σ = 164449232. Its totient is φ = 164449230.

The previous prime is 164449223. The next prime is 164449249. The reversal of 164449231 is 132944461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164449231 - 2³ = 164449223 is a prime.

It is a super-2 number, since 2×164449231² = 54087099152982722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164449291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82224615 + 82224616.

It is an arithmetic number, because the mean of its divisors is an integer number (82224616).

Almost surely, 2^164449231 is an apocalyptic number.

164449231 is a deficient number, since it is larger than the sum of its proper divisors (1).

164449231 is an equidigital number, since it uses as much as digits as its factorization.

164449231 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 164449231 is about 12823.7760039701. The cubic root of 164449231 is about 547.8696999154.

The spelling of 164449231 in words is "one hundred sixty-four million, four hundred forty-nine thousand, two hundred thirty-one".