264455189 has 2 divisors, whose sum is σ = 264455190. Its totient is φ = 264455188.

The previous prime is 264455171. The next prime is 264455197. The reversal of 264455189 is 981554462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262991089 + 1464100 = 16217^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 264455189 - 2²⁰ = 263406613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264455119) 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, 132227594 + 132227595.

It is an arithmetic number, because the mean of its divisors is an integer number (132227595).

Almost surely, 2^264455189 is an apocalyptic number.

It is an amenable number.

264455189 is a deficient number, since it is larger than the sum of its proper divisors (1).

264455189 is an equidigital number, since it uses as much as digits as its factorization.

264455189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 44.

The square root of 264455189 is about 16262.0782497195. The cubic root of 264455189 is about 641.8753498416.

The spelling of 264455189 in words is "two hundred sixty-four million, four hundred fifty-five thousand, one hundred eighty-nine".