3111933645 has 24 divisors (see below), whose sum is σ = 5400237336. Its totient is φ = 1657784448.

The previous prime is 3111933631. The next prime is 3111933647. The reversal of 3111933645 is 5463391113.

It is a happy number.

3111933645 is a `hidden beast` number, since 3 + 1 + 1 + 1 + 9 + 3 + 3 + 645 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 149744169 + 2962189476 = 12237^2 + 54426^2 .

It is not a de Polignac number, because 3111933645 - 2⁵ = 3111933613 is a prime.

It is a super-3 number, since 3×3111933645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111933647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39 + ... + 78891.

It is an arithmetic number, because the mean of its divisors is an integer number (225009889).

Almost surely, 2^3111933645 is an apocalyptic number.

It is an amenable number.

3111933645 is a deficient number, since it is larger than the sum of its proper divisors (2288303691).

3111933645 is a wasteful number, since it uses less digits than its factorization.

3111933645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79741 (or 79738 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 3111933645 is about 55784.7079852534. The cubic root of 3111933645 is about 1459.9683556349.

The spelling of 3111933645 in words is "three billion, one hundred eleven million, nine hundred thirty-three thousand, six hundred forty-five".