4945187331 has 12 divisors (see below), whose sum is σ = 8163483952. Its totient is φ = 2825821296.

The previous prime is 4945187309. The next prime is 4945187347. The reversal of 4945187331 is 1337815494.

4945187331 is a `hidden beast` number, since 494 + 51 + 87 + 3 + 31 = 666.

4945187331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4945187331 - 2⁶ = 4945187267 is a prime.

It is a super-2 number, since 2×4945187331² = 48909755477365807122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4945187231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39247456 + ... + 39247581.

Almost surely, 2^4945187331 is an apocalyptic number.

4945187331 is a deficient number, since it is larger than the sum of its proper divisors (3218296621).

4945187331 is a wasteful number, since it uses less digits than its factorization.

4945187331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78495050 (or 78495047 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 4945187331 is about 70322.0259307139. The cubic root of 4945187331 is about 1703.7044168827.

The spelling of 4945187331 in words is "four billion, nine hundred forty-five million, one hundred eighty-seven thousand, three hundred thirty-one".