2289931812 has 72 divisors (see below), whose sum is σ = 6626302592. Its totient is φ = 653184000.

The previous prime is 2289931801. The next prime is 2289931823. The reversal of 2289931812 is 2181399822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2289931801) and next prime (2289931823).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151812 + ... + 166212.

Almost surely, 2^2289931812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2289931812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3313151296).

2289931812 is an abundant number, since it is smaller than the sum of its proper divisors (4336370780).

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

2289931812 is a wasteful number, since it uses less digits than its factorization.

2289931812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15049 (or 15044 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 2289931812 is about 47853.2319911623. The cubic root of 2289931812 is about 1318.0772073899.

The spelling of 2289931812 in words is "two billion, two hundred eighty-nine million, nine hundred thirty-one thousand, eight hundred twelve".