2111389680 has 40 divisors (see below), whose sum is σ = 6545308752. Its totient is φ = 563037184.

The previous prime is 2111389603. The next prime is 2111389697. The reversal of 2111389680 is 869831112.

It is a tau number, because it is divible by the number of its divisors (40).

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, 4398489 + ... + 4398968.

Almost surely, 2^2111389680 is an apocalyptic number.

2111389680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111389680 is an abundant number, since it is smaller than the sum of its proper divisors (4433919072).

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

2111389680 is a wasteful number, since it uses less digits than its factorization.

2111389680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797473 (or 8797467 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 2111389680 is about 45949.8605003323. The cubic root of 2111389680 is about 1282.8901328221.

The spelling of 2111389680 in words is "two billion, one hundred eleven million, three hundred eighty-nine thousand, six hundred eighty".