3925878636 has 24 divisors (see below), whose sum is σ = 9407962480. Its totient is φ = 1273257792.

The previous prime is 3925878631. The next prime is 3925878647. The reversal of 3925878636 is 6368785293.

It is not an unprimeable number, because it can be changed into a prime (3925878631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4420591 + ... + 4421478.

Almost surely, 2^3925878636 is an apocalyptic number.

It is an amenable number.

3925878636 is an abundant number, since it is smaller than the sum of its proper divisors (5482083844).

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

3925878636 is a wasteful number, since it uses less digits than its factorization.

3925878636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842113 (or 8842111 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The square root of 3925878636 is about 62656.8323169948. The cubic root of 3925878636 is about 1577.5348295802.

The spelling of 3925878636 in words is "three billion, nine hundred twenty-five million, eight hundred seventy-eight thousand, six hundred thirty-six".