265193491 has 2 divisors, whose sum is σ = 265193492. Its totient is φ = 265193490.

The previous prime is 265193483. The next prime is 265193521. The reversal of 265193491 is 194391562.

265193491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265193491 - 2³ = 265193483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265193471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132596745 + 132596746.

It is an arithmetic number, because the mean of its divisors is an integer number (132596746).

Almost surely, 2^265193491 is an apocalyptic number.

265193491 is a deficient number, since it is larger than the sum of its proper divisors (1).

265193491 is an equidigital number, since it uses as much as digits as its factorization.

265193491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 265193491 is about 16284.7625404855. The cubic root of 265193491 is about 642.4721208007.

The spelling of 265193491 in words is "two hundred sixty-five million, one hundred ninety-three thousand, four hundred ninety-one".