164136541 has 2 divisors, whose sum is σ = 164136542. Its totient is φ = 164136540.

The previous prime is 164136529. The next prime is 164136563. The reversal of 164136541 is 145631461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99800100 + 64336441 = 9990^2 + 8021^2 .

It is a cyclic number.

It is not a de Polignac number, because 164136541 - 2¹¹ = 164134493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164136341) 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, 82068270 + 82068271.

It is an arithmetic number, because the mean of its divisors is an integer number (82068271).

Almost surely, 2^164136541 is an apocalyptic number.

It is an amenable number.

164136541 is a deficient number, since it is larger than the sum of its proper divisors (1).

164136541 is an equidigital number, since it uses as much as digits as its factorization.

164136541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 164136541 is about 12811.5783961228. The cubic root of 164136541 is about 547.5222328565.

The spelling of 164136541 in words is "one hundred sixty-four million, one hundred thirty-six thousand, five hundred forty-one".