164162461 has 2 divisors, whose sum is σ = 164162462. Its totient is φ = 164162460.

The previous prime is 164162447. The next prime is 164162501. The reversal of 164162461 is 164261461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153884025 + 10278436 = 12405^2 + 3206^2 .

It is a cyclic number.

It is not a de Polignac number, because 164162461 - 2²⁵ = 130608029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164166461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82081230 + 82081231.

It is an arithmetic number, because the mean of its divisors is an integer number (82081231).

Almost surely, 2^164162461 is an apocalyptic number.

It is an amenable number.

164162461 is a deficient number, since it is larger than the sum of its proper divisors (1).

164162461 is an equidigital number, since it uses as much as digits as its factorization.

164162461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 164162461 is about 12812.5899411477. The cubic root of 164162461 is about 547.5510524178.

The spelling of 164162461 in words is "one hundred sixty-four million, one hundred sixty-two thousand, four hundred sixty-one".