2309118372 has 72 divisors (see below), whose sum is σ = 6391362432. Its totient is φ = 697118400.

The previous prime is 2309118323. The next prime is 2309118377. The reversal of 2309118372 is 2738119032.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2309118377) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 96558 + ... + 118074.

Almost surely, 2^2309118372 is an apocalyptic number.

2309118372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2309118372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3195681216).

2309118372 is an abundant number, since it is smaller than the sum of its proper divisors (4082244060).

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

2309118372 is a wasteful number, since it uses less digits than its factorization.

2309118372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21809 (or 21804 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2309118372 is about 48053.2867970548. The cubic root of 2309118372 is about 1321.7482139385.

The spelling of 2309118372 in words is "two billion, three hundred nine million, one hundred eighteen thousand, three hundred seventy-two".