2187516128 has 48 divisors (see below), whose sum is σ = 4981253760. Its totient is φ = 926203776.

The previous prime is 2187516061. The next prime is 2187516169. The reversal of 2187516128 is 8216157812.

It is a super-2 number, since 2×2187516128² = 9570453620520224768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40238 + ... + 77421.

It is an arithmetic number, because the mean of its divisors is an integer number (103776120).

Almost surely, 2^2187516128 is an apocalyptic number.

2187516128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2187516128 is an abundant number, since it is smaller than the sum of its proper divisors (2793737632).

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

2187516128 is a wasteful number, since it uses less digits than its factorization.

2187516128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117759 (or 117751 counting only the distinct ones).

The product of its digits is 53760, while the sum is 41.

The square root of 2187516128 is about 46770.8897499289. The cubic root of 2187516128 is about 1298.1267157233.

The spelling of 2187516128 in words is "two billion, one hundred eighty-seven million, five hundred sixteen thousand, one hundred twenty-eight".