2113660863 has 6 divisors (see below), whose sum is σ = 3053065704. Its totient is φ = 1409107236.

The previous prime is 2113660849. The next prime is 2113660883. The reversal of 2113660863 is 3680663112.

2113660863 is a `hidden beast` number, since 2 + 11 + 36 + 608 + 6 + 3 = 666.

It is not a de Polignac number, because 2113660863 - 2⁶ = 2113660799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113660883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117425595 + ... + 117425612.

It is an arithmetic number, because the mean of its divisors is an integer number (508844284).

Almost surely, 2^2113660863 is an apocalyptic number.

2113660863 is a deficient number, since it is larger than the sum of its proper divisors (939404841).

2113660863 is a wasteful number, since it uses less digits than its factorization.

2113660863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234851213 (or 234851210 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2113660863 is about 45974.5675672975. The cubic root of 2113660863 is about 1283.3499617493.

It can be divided in two parts, 2113 and 660863, that added together give a triangular number (662976 = T₁₁₅₁).

The spelling of 2113660863 in words is "two billion, one hundred thirteen million, six hundred sixty thousand, eight hundred sixty-three".