2189470100 has 18 divisors (see below), whose sum is σ = 4751150334. Its totient is φ = 875788000.

The previous prime is 2189470081. The next prime is 2189470147. The reversal of 2189470100 is 10749812.

It can be written as a sum of positive squares in 3 ways, for example, as 13060996 + 2176409104 = 3614^2 + 46652^2 .

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, 10947251 + ... + 10947450.

Almost surely, 2^2189470100 is an apocalyptic number.

2189470100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2189470100 is an abundant number, since it is smaller than the sum of its proper divisors (2561680234).

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

2189470100 is a wasteful number, since it uses less digits than its factorization.

2189470100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21894715 (or 21894708 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 2189470100 is about 46791.7738496843. The cubic root of 2189470100 is about 1298.5131126301.

The spelling of 2189470100 in words is "two billion, one hundred eighty-nine million, four hundred seventy thousand, one hundred".