2188456902 has 12 divisors (see below), whose sum is σ = 4741656660. Its totient is φ = 729485628.

The previous prime is 2188456901. The next prime is 2188456913. The reversal of 2188456902 is 2096548812.

2188456902 is a `hidden beast` number, since 2 + 1 + 8 + 84 + 569 + 0 + 2 = 666.

It is a super-2 number, since 2×2188456902² = 9578687223822875208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188456901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60790452 + ... + 60790487.

It is an arithmetic number, because the mean of its divisors is an integer number (395138055).

Almost surely, 2^2188456902 is an apocalyptic number.

2188456902 is an abundant number, since it is smaller than the sum of its proper divisors (2553199758).

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

2188456902 is a wasteful number, since it uses less digits than its factorization.

2188456902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121580947 (or 121580944 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 2188456902 is about 46780.9459288715. The cubic root of 2188456902 is about 1298.3127819832.

The spelling of 2188456902 in words is "two billion, one hundred eighty-eight million, four hundred fifty-six thousand, nine hundred two".