3894001636 has 24 divisors (see below), whose sum is σ = 8039230976. Its totient is φ = 1615023360.

The previous prime is 3894001547. The next prime is 3894001649. The reversal of 3894001636 is 6361004983.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242221 + ... + 2243956.

Almost surely, 2^3894001636 is an apocalyptic number.

It is an amenable number.

3894001636 is an abundant number, since it is smaller than the sum of its proper divisors (4145229340).

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

3894001636 is a wasteful number, since it uses less digits than its factorization.

3894001636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486219 (or 4486217 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 3894001636 is about 62401.9361558598. The cubic root of 3894001636 is about 1573.2535119220.

The spelling of 3894001636 in words is "three billion, eight hundred ninety-four million, one thousand, six hundred thirty-six".