164938061 has 2 divisors, whose sum is σ = 164938062. Its totient is φ = 164938060.

The previous prime is 164938057. The next prime is 164938091. The reversal of 164938061 is 160839461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152646025 + 12292036 = 12355^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 164938061 - 2² = 164938057 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 (164938091) 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, 82469030 + 82469031.

It is an arithmetic number, because the mean of its divisors is an integer number (82469031).

Almost surely, 2^164938061 is an apocalyptic number.

It is an amenable number.

164938061 is a deficient number, since it is larger than the sum of its proper divisors (1).

164938061 is an equidigital number, since it uses as much as digits as its factorization.

164938061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 164938061 is about 12842.8213800551. The cubic root of 164938061 is about 548.4120156571.

The spelling of 164938061 in words is "one hundred sixty-four million, nine hundred thirty-eight thousand, sixty-one".