3951232680 has 128 divisors (see below), whose sum is σ = 12111897600. Its totient is φ = 1030828032.

The previous prime is 3951232661. The next prime is 3951232711. The reversal of 3951232680 is 862321593.

It is a super-2 number, since 2×3951232680² = 31224479382999964800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3045792 + ... + 3047088.

It is an arithmetic number, because the mean of its divisors is an integer number (94624200).

Almost surely, 2^3951232680 is an apocalyptic number.

3951232680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3951232680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6055948800).

3951232680 is an abundant number, since it is smaller than the sum of its proper divisors (8160664920).

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

3951232680 is a wasteful number, since it uses less digits than its factorization.

3951232680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843 (or 1839 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 3951232680 is about 62858.8313604381. The cubic root of 3951232680 is about 1580.9235480788.

The spelling of 3951232680 in words is "three billion, nine hundred fifty-one million, two hundred thirty-two thousand, six hundred eighty".