2113866900 has 54 divisors (see below), whose sum is σ = 6625801182. Its totient is φ = 563697600.

The previous prime is 2113866899. The next prime is 2113866901. The reversal of 2113866900 is 96683112.

2113866900 is a `hidden beast` number, since 211 + 386 + 69 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2113866899) and next prime (2113866901).

It can be written as a sum of positive squares in 3 ways, for example, as 261080964 + 1852785936 = 16158^2 + 43044^2 .

It is a super-2 number, since 2×2113866900² = 8936866541831220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113866901) 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 17 ways as a sum of consecutive naturals, for example, 1173471 + ... + 1175270.

Almost surely, 2^2113866900 is an apocalyptic number.

2113866900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113866900 is an abundant number, since it is smaller than the sum of its proper divisors (4511934282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2113866900 is a wasteful number, since it uses less digits than its factorization.

2113866900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348761 (or 2348751 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2113866900 is about 45976.8082841774. The cubic root of 2113866900 is about 1283.3916601739.

The spelling of 2113866900 in words is "two billion, one hundred thirteen million, eight hundred sixty-six thousand, nine hundred".