264888191 has 2 divisors, whose sum is σ = 264888192. Its totient is φ = 264888190.

The previous prime is 264888179. The next prime is 264888209. The reversal of 264888191 is 191888462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264888191 - 2¹⁴ = 264871807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264888391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132444095 + 132444096.

It is an arithmetic number, because the mean of its divisors is an integer number (132444096).

Almost surely, 2^264888191 is an apocalyptic number.

264888191 is a deficient number, since it is larger than the sum of its proper divisors (1).

264888191 is an equidigital number, since it uses as much as digits as its factorization.

264888191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 47.

The square root of 264888191 is about 16275.3860476488. The cubic root of 264888191 is about 642.2254806887.

The spelling of 264888191 in words is "two hundred sixty-four million, eight hundred eighty-eight thousand, one hundred ninety-one".