2188922772 has 24 divisors (see below), whose sum is σ = 5272244992. Its totient is φ = 706104000.

The previous prime is 2188922767. The next prime is 2188922773. The reversal of 2188922772 is 2772298812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188922773) 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, 2941729 + ... + 2942472.

Almost surely, 2^2188922772 is an apocalyptic number.

It is an amenable number.

2188922772 is an abundant number, since it is smaller than the sum of its proper divisors (3083322220).

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

2188922772 is a wasteful number, since it uses less digits than its factorization.

2188922772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884239 (or 5884237 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 2188922772 is about 46785.9249347493. The cubic root of 2188922772 is about 1298.4049020003.

The spelling of 2188922772 in words is "two billion, one hundred eighty-eight million, nine hundred twenty-two thousand, seven hundred seventy-two".