3856636038 has 32 divisors (see below), whose sum is σ = 7817752800. Its totient is φ = 1268234496.

The previous prime is 3856636027. The next prime is 3856636097. The reversal of 3856636038 is 8306366583.

It is a congruent number.

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, 139728 + ... + 165036.

It is an arithmetic number, because the mean of its divisors is an integer number (244304775).

Almost surely, 2^3856636038 is an apocalyptic number.

3856636038 is an abundant number, since it is smaller than the sum of its proper divisors (3961116762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3856636038 is a wasteful number, since it uses less digits than its factorization.

3856636038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25656.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The square root of 3856636038 is about 62101.8199250231. The cubic root of 3856636038 is about 1568.2051835975.

The spelling of 3856636038 in words is "three billion, eight hundred fifty-six million, six hundred thirty-six thousand, thirty-eight".