2117488920 has 64 divisors (see below), whose sum is σ = 6408724320. Its totient is φ = 559663104.

The previous prime is 2117488909. The next prime is 2117488943. The reversal of 2117488920 is 298847112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64519 + ... + 91638.

Almost surely, 2^2117488920 is an apocalyptic number.

2117488920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2117488920 is an abundant number, since it is smaller than the sum of its proper divisors (4291235400).

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

2117488920 is a wasteful number, since it uses less digits than its factorization.

2117488920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156284 (or 156280 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 2117488920 is about 46016.1810670986. The cubic root of 2117488920 is about 1284.1242540443.

The spelling of 2117488920 in words is "two billion, one hundred seventeen million, four hundred eighty-eight thousand, nine hundred twenty".