865038538 has 32 divisors (see below), whose sum is σ = 1612840320. Its totient is φ = 338817600.

The previous prime is 865038527. The next prime is 865038563. The reversal of 865038538 is 835830568.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5148 + ... + 41911.

It is an arithmetic number, because the mean of its divisors is an integer number (50401260).

Almost surely, 2^865038538 is an apocalyptic number.

865038538 is a deficient number, since it is larger than the sum of its proper divisors (747801782).

865038538 is a wasteful number, since it uses less digits than its factorization.

865038538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47182.

The product of its (nonzero) digits is 691200, while the sum is 46.

The square root of 865038538 is about 29411.5374980636. The cubic root of 865038538 is about 952.8220932685.

The spelling of 865038538 in words is "eight hundred sixty-five million, thirty-eight thousand, five hundred thirty-eight".