164085907 has 2 divisors, whose sum is σ = 164085908. Its totient is φ = 164085906.

The previous prime is 164085869. The next prime is 164085917. The reversal of 164085907 is 709580461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164085907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164085907.

It is not a weakly prime, because it can be changed into another prime (164085917) 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, 82042953 + 82042954.

It is an arithmetic number, because the mean of its divisors is an integer number (82042954).

Almost surely, 2^164085907 is an apocalyptic number.

164085907 is a deficient number, since it is larger than the sum of its proper divisors (1).

164085907 is an equidigital number, since it uses as much as digits as its factorization.

164085907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 164085907 is about 12809.6021405819. The cubic root of 164085907 is about 547.4659258904.

The spelling of 164085907 in words is "one hundred sixty-four million, eighty-five thousand, nine hundred seven".