338737865 has 4 divisors (see below), whose sum is σ = 406485444. Its totient is φ = 270990288.

The previous prime is 338737831. The next prime is 338737877. The reversal of 338737865 is 568737833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 568737833 = 397 ⋅1432589.

It can be written as a sum of positive squares in 2 ways, for example, as 254593936 + 84143929 = 15956^2 + 9173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338737865 is a prime.

It is a super-2 number, since 2×338737865² = 229486682369516450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 33873782 + ... + 33873791.

It is an arithmetic number, because the mean of its divisors is an integer number (101621361).

Almost surely, 2^338737865 is an apocalyptic number.

It is an amenable number.

338737865 is a deficient number, since it is larger than the sum of its proper divisors (67747579).

338737865 is an equidigital number, since it uses as much as digits as its factorization.

338737865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67747578.

The product of its digits is 2540160, while the sum is 50.

The square root of 338737865 is about 18404.8326534093. The cubic root of 338737865 is about 697.0884954264.

The spelling of 338737865 in words is "three hundred thirty-eight million, seven hundred thirty-seven thousand, eight hundred sixty-five".