2109612972 has 18 divisors (see below), whose sum is σ = 4922801548. Its totient is φ = 703151288.

The previous prime is 2109612949. The next prime is 2109613031. The reversal of 2109612972 is 2792169012.

It is a self number, because there is not a number n which added to its sum of digits gives 2109612972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152479 + ... + 165737.

Almost surely, 2^2109612972 is an apocalyptic number.

It is an amenable number.

2109612972 is an abundant number, since it is smaller than the sum of its proper divisors (2813188576).

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

2109612972 is an frugal number, since it uses more digits than its factorization.

2109612972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26525 (or 13264 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 2109612972 is about 45930.5233151115. The cubic root of 2109612972 is about 1282.5301865076.

The spelling of 2109612972 in words is "two billion, one hundred nine million, six hundred twelve thousand, nine hundred seventy-two".