265748491 has 2 divisors, whose sum is σ = 265748492. Its totient is φ = 265748490.

The previous prime is 265748447. The next prime is 265748533. The reversal of 265748491 is 194847562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265748491 is a prime.

It is not a weakly prime, because it can be changed into another prime (265748411) 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, 132874245 + 132874246.

It is an arithmetic number, because the mean of its divisors is an integer number (132874246).

Almost surely, 2^265748491 is an apocalyptic number.

265748491 is a deficient number, since it is larger than the sum of its proper divisors (1).

265748491 is an equidigital number, since it uses as much as digits as its factorization.

265748491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 265748491 is about 16301.7941037175. The cubic root of 265748491 is about 642.9199995282.

The spelling of 265748491 in words is "two hundred sixty-five million, seven hundred forty-eight thousand, four hundred ninety-one".