3856611018 has 32 divisors (see below), whose sum is σ = 8311564800. Its totient is φ = 1185932736.

The previous prime is 3856610999. The next prime is 3856611029. The reversal of 3856611018 is 8101166583.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 123148 + ... + 151256.

It is an arithmetic number, because the mean of its divisors is an integer number (259736400).

Almost surely, 2^3856611018 is an apocalyptic number.

3856611018 is an abundant number, since it is smaller than the sum of its proper divisors (4454953782).

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

3856611018 is a wasteful number, since it uses less digits than its factorization.

3856611018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29886.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 3856611018 is about 62101.6184813246. The cubic root of 3856611018 is about 1568.2017923364.

The spelling of 3856611018 in words is "three billion, eight hundred fifty-six million, six hundred eleven thousand, eighteen".