265137493 has 2 divisors, whose sum is σ = 265137494. Its totient is φ = 265137492.

The previous prime is 265137487. The next prime is 265137503. The reversal of 265137493 is 394731562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236482884 + 28654609 = 15378^2 + 5353^2 .

It is a cyclic number.

It is not a de Polignac number, because 265137493 - 2⁵ = 265137461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265137463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132568746 + 132568747.

It is an arithmetic number, because the mean of its divisors is an integer number (132568747).

Almost surely, 2^265137493 is an apocalyptic number.

It is an amenable number.

265137493 is a deficient number, since it is larger than the sum of its proper divisors (1).

265137493 is an equidigital number, since it uses as much as digits as its factorization.

265137493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 40.

The square root of 265137493 is about 16283.0431123915. The cubic root of 265137493 is about 642.4268963544.

The spelling of 265137493 in words is "two hundred sixty-five million, one hundred thirty-seven thousand, four hundred ninety-three".