265715138 has 8 divisors (see below), whose sum is σ = 429232188. Its totient is φ = 122637744.

The previous prime is 265715101. The next prime is 265715147. The reversal of 265715138 is 831517562.

It can be written as a sum of positive squares in 2 ways, for example, as 206008609 + 59706529 = 14353^2 + 7727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5109881 + ... + 5109932.

Almost surely, 2^265715138 is an apocalyptic number.

265715138 is a deficient number, since it is larger than the sum of its proper divisors (163517050).

265715138 is a wasteful number, since it uses less digits than its factorization.

265715138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219828.

The product of its digits is 50400, while the sum is 38.

The square root of 265715138 is about 16300.7710860560. The cubic root of 265715138 is about 642.8931016547.

The spelling of 265715138 in words is "two hundred sixty-five million, seven hundred fifteen thousand, one hundred thirty-eight".