3113638778 has 12 divisors (see below), whose sum is σ = 4735329678. Its totient is φ = 1535487840.

The previous prime is 3113638747. The next prime is 3113638811. The reversal of 3113638778 is 8778363113.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2892611089 + 221027689 = 53783^2 + 14867^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 135413 + ... + 156728.

Almost surely, 2^3113638778 is an apocalyptic number.

3113638778 is a deficient number, since it is larger than the sum of its proper divisors (1621690900).

3113638778 is an equidigital number, since it uses as much as digits as its factorization.

3113638778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292289 (or 292216 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 3113638778 is about 55799.9890501781. The cubic root of 3113638778 is about 1460.2349621848.

The spelling of 3113638778 in words is "three billion, one hundred thirteen million, six hundred thirty-eight thousand, seven hundred seventy-eight".