264191377 has 2 divisors, whose sum is σ = 264191378. Its totient is φ = 264191376.

The previous prime is 264191341. The next prime is 264191383. The reversal of 264191377 is 773191462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172108161 + 92083216 = 13119^2 + 9596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264191377 is a prime.

It is a super-2 number, since 2×264191377² = 139594167362312258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (264191387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132095688 + 132095689.

It is an arithmetic number, because the mean of its divisors is an integer number (132095689).

Almost surely, 2^264191377 is an apocalyptic number.

It is an amenable number.

264191377 is a deficient number, since it is larger than the sum of its proper divisors (1).

264191377 is an equidigital number, since it uses as much as digits as its factorization.

264191377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 264191377 is about 16253.9649624330. The cubic root of 264191377 is about 641.6618407538.

The spelling of 264191377 in words is "two hundred sixty-four million, one hundred ninety-one thousand, three hundred seventy-seven".