3163811985 has 24 divisors (see below), whose sum is σ = 5673044520. Its totient is φ = 1629180672.

The previous prime is 3163811969. The next prime is 3163812007. The reversal of 3163811985 is 5891183613.

It is a happy number.

3163811985 is a `hidden beast` number, since 3 + 1 + 638 + 1 + 1 + 9 + 8 + 5 = 666.

3163811985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13571856 + 3150240129 = 3684^2 + 56127^2 .

It is not a de Polignac number, because 3163811985 - 2⁴ = 3163811969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3163811985.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1210884 + ... + 1213493.

It is an arithmetic number, because the mean of its divisors is an integer number (236376855).

Almost surely, 2^3163811985 is an apocalyptic number.

It is an amenable number.

3163811985 is a deficient number, since it is larger than the sum of its proper divisors (2509232535).

3163811985 is a wasteful number, since it uses less digits than its factorization.

3163811985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424417 (or 2424414 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 3163811985 is about 56247.7731559215. The cubic root of 3163811985 is about 1468.0366194057.

The spelling of 3163811985 in words is "three billion, one hundred sixty-three million, eight hundred eleven thousand, nine hundred eighty-five".