265717138 has 8 divisors (see below), whose sum is σ = 400579200. Its totient is φ = 132190740.

The previous prime is 265717129. The next prime is 265717139. The reversal of 265717138 is 831717562.

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

It is a super-2 number, since 2×265717138² = 141211194853822088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 265717138.

It is not an unprimeable number, because it can be changed into a prime (265717139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333418 + ... + 334213.

It is an arithmetic number, because the mean of its divisors is an integer number (50072400).

Almost surely, 2^265717138 is an apocalyptic number.

265717138 is a deficient number, since it is larger than the sum of its proper divisors (134862062).

265717138 is a wasteful number, since it uses less digits than its factorization.

265717138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667832.

The product of its digits is 70560, while the sum is 40.

The square root of 265717138 is about 16300.8324327318. The cubic root of 265717138 is about 642.8947146389.

The spelling of 265717138 in words is "two hundred sixty-five million, seven hundred seventeen thousand, one hundred thirty-eight".