164925997 has 2 divisors, whose sum is σ = 164925998. Its totient is φ = 164925996.

The previous prime is 164925979. The next prime is 164926033. The reversal of 164925997 is 799529461.

Together with previous prime (164925979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162282121 + 2643876 = 12739^2 + 1626^2 .

It is a cyclic number.

It is not a de Polignac number, because 164925997 - 2⁷ = 164925869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164925097) 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, 82462998 + 82462999.

It is an arithmetic number, because the mean of its divisors is an integer number (82462999).

Almost surely, 2^164925997 is an apocalyptic number.

It is an amenable number.

164925997 is a deficient number, since it is larger than the sum of its proper divisors (1).

164925997 is an equidigital number, since it uses as much as digits as its factorization.

164925997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 52.

The square root of 164925997 is about 12842.3516927391. The cubic root of 164925997 is about 548.3986445694.

The spelling of 164925997 in words is "one hundred sixty-four million, nine hundred twenty-five thousand, nine hundred ninety-seven".