2113666972 has 24 divisors (see below), whose sum is σ = 3992839200. Its totient is φ = 976024896.

The previous prime is 2113666937. The next prime is 2113666981. The reversal of 2113666972 is 2796663112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393447 + ... + 398782.

It is an arithmetic number, because the mean of its divisors is an integer number (166368300).

Almost surely, 2^2113666972 is an apocalyptic number.

It is an amenable number.

2113666972 is a deficient number, since it is larger than the sum of its proper divisors (1879172228).

2113666972 is a wasteful number, since it uses less digits than its factorization.

2113666972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792285 (or 792283 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 2113666972 is about 45974.6340061560. The cubic root of 2113666972 is about 1283.3511981471.

The spelling of 2113666972 in words is "two billion, one hundred thirteen million, six hundred sixty-six thousand, nine hundred seventy-two".