3856197636 has 72 divisors (see below), whose sum is σ = 9915394944. Its totient is φ = 1263461760.

The previous prime is 3856197623. The next prime is 3856197701. The reversal of 3856197636 is 6367916583.

3856197636 is a `hidden beast` number, since 3 + 8 + 561 + 9 + 76 + 3 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 504201 + ... + 511791.

Almost surely, 2^3856197636 is an apocalyptic number.

3856197636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3856197636 is an abundant number, since it is smaller than the sum of its proper divisors (6059197308).

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

3856197636 is a wasteful number, since it uses less digits than its factorization.

3856197636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7841 (or 7836 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 3856197636 is about 62098.2901213874. The cubic root of 3856197636 is about 1568.1457595870.

The spelling of 3856197636 in words is "three billion, eight hundred fifty-six million, one hundred ninety-seven thousand, six hundred thirty-six".