164152661 has 2 divisors, whose sum is σ = 164152662. Its totient is φ = 164152660.

The previous prime is 164152589. The next prime is 164152687. The reversal of 164152661 is 166251461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117831025 + 46321636 = 10855^2 + 6806^2 .

It is a cyclic number.

It is not a de Polignac number, because 164152661 - 2²⁶ = 97043797 is a prime.

It is a super-2 number, since 2×164152661² = 53892192226761842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164152061) 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, 82076330 + 82076331.

It is an arithmetic number, because the mean of its divisors is an integer number (82076331).

Almost surely, 2^164152661 is an apocalyptic number.

It is an amenable number.

164152661 is a deficient number, since it is larger than the sum of its proper divisors (1).

164152661 is an equidigital number, since it uses as much as digits as its factorization.

164152661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 164152661 is about 12812.2074991002. The cubic root of 164152661 is about 547.5401564897.

The spelling of 164152661 in words is "one hundred sixty-four million, one hundred fifty-two thousand, six hundred sixty-one".