2190042900 has 72 divisors (see below), whose sum is σ = 7040591040. Its totient is φ = 584010720.

The previous prime is 2190042887. The next prime is 2190042917. The reversal of 2190042900 is 92400912.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 402864 + ... + 408263.

Almost surely, 2^2190042900 is an apocalyptic number.

2190042900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2190042900 is an abundant number, since it is smaller than the sum of its proper divisors (4850548140).

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

2190042900 is a wasteful number, since it uses less digits than its factorization.

2190042900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811150 (or 811137 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2190042900 is about 46797.8941833925. The cubic root of 2190042900 is about 1298.6263399445.

The spelling of 2190042900 in words is "two billion, one hundred ninety million, forty-two thousand, nine hundred".