264618121 has 2 divisors, whose sum is σ = 264618122. Its totient is φ = 264618120.

The previous prime is 264618113. The next prime is 264618143. The reversal of 264618121 is 121816462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177848896 + 86769225 = 13336^2 + 9315^2 .

It is a cyclic number.

It is not a de Polignac number, because 264618121 - 2³ = 264618113 is a prime.

It is not a weakly prime, because it can be changed into another prime (264618161) 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, 132309060 + 132309061.

It is an arithmetic number, because the mean of its divisors is an integer number (132309061).

Almost surely, 2^264618121 is an apocalyptic number.

It is an amenable number.

264618121 is a deficient number, since it is larger than the sum of its proper divisors (1).

264618121 is an equidigital number, since it uses as much as digits as its factorization.

264618121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 264618121 is about 16267.0870471637. The cubic root of 264618121 is about 642.0071435171.

The spelling of 264618121 in words is "two hundred sixty-four million, six hundred eighteen thousand, one hundred twenty-one".