3921892672 has 28 divisors (see below), whose sum is σ = 7841930976. Its totient is φ = 1945973120.

The previous prime is 3921892643. The next prime is 3921892687. The reversal of 3921892672 is 2762981293.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225508 + ... + 242275.

Almost surely, 2^3921892672 is an apocalyptic number.

3921892672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3921892672 is a deficient number, since it is larger than the sum of its proper divisors (3920038304).

3921892672 is a wasteful number, since it uses less digits than its factorization.

3921892672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467926 (or 467916 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 3921892672 is about 62625.0163433112. The cubic root of 3921892672 is about 1577.0007558180. Note that the first 3 decimals are identical.

The spelling of 3921892672 in words is "three billion, nine hundred twenty-one million, eight hundred ninety-two thousand, six hundred seventy-two".