2188274688 has 132 divisors (see below), whose sum is σ = 6651685560. Its totient is φ = 690978816.

The previous prime is 2188274651. The next prime is 2188274689. The reversal of 2188274688 is 8864728812.

It is a super-2 number, since 2×2188274688² = 9577092220282994688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2188274689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168856 + ... + 181352.

Almost surely, 2^2188274688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2188274688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3325842780).

2188274688 is an abundant number, since it is smaller than the sum of its proper divisors (4463410872).

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

2188274688 is a wasteful number, since it uses less digits than its factorization.

2188274688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12542 (or 12521 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 54.

The square root of 2188274688 is about 46778.9983646508. The cubic root of 2188274688 is about 1298.2767478670.

The spelling of 2188274688 in words is "two billion, one hundred eighty-eight million, two hundred seventy-four thousand, six hundred eighty-eight".