3921919474 has 32 divisors (see below), whose sum is σ = 6718795776. Its totient is φ = 1699560720.

The previous prime is 3921919457. The next prime is 3921919481. The reversal of 3921919474 is 4749191293.

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, 142719 + ... + 167965.

It is an arithmetic number, because the mean of its divisors is an integer number (209962368).

Almost surely, 2^3921919474 is an apocalyptic number.

3921919474 is a deficient number, since it is larger than the sum of its proper divisors (2796876302).

3921919474 is a wasteful number, since it uses less digits than its factorization.

3921919474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25590.

The product of its digits is 489888, while the sum is 49.

The square root of 3921919474 is about 62625.2303309138. The cubic root of 3921919474 is about 1577.0043481888.

The spelling of 3921919474 in words is "three billion, nine hundred twenty-one million, nine hundred nineteen thousand, four hundred seventy-four".