3902218772 has 24 divisors (see below), whose sum is σ = 7149492000. Its totient is φ = 1861128416.

The previous prime is 3902218753. The next prime is 3902218783. The reversal of 3902218772 is 2778122093.

It is a super-2 number, since 2×3902218772² = 30454622689098375968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 193022 + ... + 212277.

It is an arithmetic number, because the mean of its divisors is an integer number (297895500).

Almost surely, 2^3902218772 is an apocalyptic number.

It is an amenable number.

3902218772 is a deficient number, since it is larger than the sum of its proper divisors (3247273228).

3902218772 is a wasteful number, since it uses less digits than its factorization.

3902218772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405415 (or 405413 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 3902218772 is about 62467.7418512947. The cubic root of 3902218772 is about 1574.3593628013.

The spelling of 3902218772 in words is "three billion, nine hundred two million, two hundred eighteen thousand, seven hundred seventy-two".