2100243996 has 18 divisors (see below), whose sum is σ = 5308950192. Its totient is φ = 700081320.

The previous prime is 2100243973. The next prime is 2100244009. The reversal of 2100243996 is 6993420012.

2100243996 is a `hidden beast` number, since 210 + 0 + 2 + 439 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2100243996² = 8822049685468096032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 58340111 = 2100243996 / (2 + 1 + 0 + 0 + 2 + 4 + 3 + 9 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 2100243996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29170020 + ... + 29170091.

Almost surely, 2^2100243996 is an apocalyptic number.

It is an amenable number.

2100243996 is an abundant number, since it is smaller than the sum of its proper divisors (3208706196).

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

2100243996 is a wasteful number, since it uses less digits than its factorization.

2100243996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58340121 (or 58340116 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2100243996 is about 45828.4190868505. The cubic root of 2100243996 is about 1280.6287592880.

The spelling of 2100243996 in words is "two billion, one hundred million, two hundred forty-three thousand, nine hundred ninety-six".