3891431196 has 36 divisors (see below), whose sum is σ = 10076595984. Its totient is φ = 1265505600.

The previous prime is 3891431183. The next prime is 3891431213. The reversal of 3891431196 is 6911341983.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1316760 + ... + 1319711.

It is an arithmetic number, because the mean of its divisors is an integer number (279905444).

Almost surely, 2^3891431196 is an apocalyptic number.

3891431196 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3891431196 is an abundant number, since it is smaller than the sum of its proper divisors (6185164788).

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

3891431196 is a wasteful number, since it uses less digits than its factorization.

3891431196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636522 (or 2636517 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 3891431196 is about 62381.3369205887. The cubic root of 3891431196 is about 1572.9072662285.

The spelling of 3891431196 in words is "three billion, eight hundred ninety-one million, four hundred thirty-one thousand, one hundred ninety-six".