3891151872 has 220 divisors, whose sum is σ = 11900864976. Its totient is φ = 1265725440.

The previous prime is 3891151853. The next prime is 3891151883. The reversal of 3891151872 is 2781511983.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3566047 + ... + 3567137.

Almost surely, 2^3891151872 is an apocalyptic number.

3891151872 is a gapful number since it is divisible by the number (32) 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 3891151872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5950432488).

3891151872 is an abundant number, since it is smaller than the sum of its proper divisors (8009713104).

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

3891151872 is a wasteful number, since it uses less digits than its factorization.

3891151872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1139 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 3891151872 is about 62379.0980377241. The cubic root of 3891151872 is about 1572.8696312951.

The spelling of 3891151872 in words is "three billion, eight hundred ninety-one million, one hundred fifty-one thousand, eight hundred seventy-two".