164938517 has 2 divisors, whose sum is σ = 164938518. Its totient is φ = 164938516.

The previous prime is 164938493. The next prime is 164938541. The reversal of 164938517 is 715839461.

It is a balanced prime because it is at equal distance from previous prime (164938493) and next prime (164938541).

It can be written as a sum of positive squares in only one way, i.e., 164839921 + 98596 = 12839^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 164938517 - 2¹⁸ = 164676373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164938717) 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, 82469258 + 82469259.

It is an arithmetic number, because the mean of its divisors is an integer number (82469259).

Almost surely, 2^164938517 is an apocalyptic number.

It is an amenable number.

164938517 is a deficient number, since it is larger than the sum of its proper divisors (1).

164938517 is an equidigital number, since it uses as much as digits as its factorization.

164938517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 164938517 is about 12842.8391331512. The cubic root of 164938517 is about 548.4125210502.

The spelling of 164938517 in words is "one hundred sixty-four million, nine hundred thirty-eight thousand, five hundred seventeen".