2188870520 has 32 divisors (see below), whose sum is σ = 4930988400. Its totient is φ = 874476288.

The previous prime is 2188870517. The next prime is 2188870553. The reversal of 2188870520 is 250788812.

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, 5 + ... + 66164.

Almost surely, 2^2188870520 is an apocalyptic number.

2188870520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2188870520 is an abundant number, since it is smaller than the sum of its proper divisors (2742117880).

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

2188870520 is a wasteful number, since it uses less digits than its factorization.

2188870520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67007 (or 67003 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 2188870520 is about 46785.3665156104. The cubic root of 2188870520 is about 1298.3945704659.

The spelling of 2188870520 in words is "two billion, one hundred eighty-eight million, eight hundred seventy thousand, five hundred twenty".