2189874064 has 40 divisors (see below), whose sum is σ = 4873670208. Its totient is φ = 933744000.

The previous prime is 2189874061. The next prime is 2189874077. The reversal of 2189874064 is 4604789812.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2189873999 and 2189874017.

It is not an unprimeable number, because it can be changed into a prime (2189874061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27562 + ... + 71689.

Almost surely, 2^2189874064 is an apocalyptic number.

It is an amenable number.

2189874064 is an abundant number, since it is smaller than the sum of its proper divisors (2683796144).

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

2189874064 is a wasteful number, since it uses less digits than its factorization.

2189874064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99463 (or 99457 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 2189874064 is about 46796.0902640381. The cubic root of 2189874064 is about 1298.5929676132.

The spelling of 2189874064 in words is "two billion, one hundred eighty-nine million, eight hundred seventy-four thousand, sixty-four".