3951322816 has 28 divisors (see below), whose sum is σ = 8961036688. Its totient is φ = 1693423872.

The previous prime is 3951322787. The next prime is 3951322841. The reversal of 3951322816 is 6182231593.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×3951322816² = 31225903992484339712, which contains 22 as substring.

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, 4409511 + ... + 4410406.

Almost surely, 2^3951322816 is an apocalyptic number.

It is an amenable number.

3951322816 is an abundant number, since it is smaller than the sum of its proper divisors (5009713872).

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

3951322816 is an equidigital number, since it uses as much as digits as its factorization.

3951322816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8819936 (or 8819926 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 3951322816 is about 62859.5483279987. The cubic root of 3951322816 is about 1580.9355693941.

The spelling of 3951322816 in words is "three billion, nine hundred fifty-one million, three hundred twenty-two thousand, eight hundred sixteen".