2188385500 has 48 divisors (see below), whose sum is σ = 5462218944. Its totient is φ = 750302400.

The previous prime is 2188385491. The next prime is 2188385533. The reversal of 2188385500 is 55838812.

It is a super-2 number, since 2×2188385500² = 9578062193220500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309127 + ... + 316126.

It is an arithmetic number, because the mean of its divisors is an integer number (113796228).

Almost surely, 2^2188385500 is an apocalyptic number.

2188385500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2188385500 is an abundant number, since it is smaller than the sum of its proper divisors (3273833444).

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

2188385500 is a wasteful number, since it uses less digits than its factorization.

2188385500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625279 (or 625267 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 2188385500 is about 46780.1827700577. The cubic root of 2188385500 is about 1298.2986619675.

The spelling of 2188385500 in words is "two billion, one hundred eighty-eight million, three hundred eighty-five thousand, five hundred".