164135549 has 2 divisors, whose sum is σ = 164135550. Its totient is φ = 164135548.

The previous prime is 164135507. The next prime is 164135591. The reversal of 164135549 is 945531461.

It is a balanced prime because it is at equal distance from previous prime (164135507) and next prime (164135591).

It can be written as a sum of positive squares in only one way, i.e., 146579449 + 17556100 = 12107^2 + 4190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164135549 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 (164135249) 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, 82067774 + 82067775.

It is an arithmetic number, because the mean of its divisors is an integer number (82067775).

Almost surely, 2^164135549 is an apocalyptic number.

It is an amenable number.

164135549 is a deficient number, since it is larger than the sum of its proper divisors (1).

164135549 is an equidigital number, since it uses as much as digits as its factorization.

164135549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 164135549 is about 12811.5396810844. The cubic root of 164135549 is about 547.5211298254.

The spelling of 164135549 in words is "one hundred sixty-four million, one hundred thirty-five thousand, five hundred forty-nine".