2389997500 has 120 divisors (see below), whose sum is σ = 5741399664. Its totient is φ = 863040000.

The previous prime is 2389997473. The next prime is 2389997531. The reversal of 2389997500 is 57999832.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 6407314 + ... + 6407686.

Almost surely, 2^2389997500 is an apocalyptic number.

2389997500 is a gapful number since it is divisible by the number (20) 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 2389997500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2870699832).

2389997500 is an abundant number, since it is smaller than the sum of its proper divisors (3351402164).

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

2389997500 is a wasteful number, since it uses less digits than its factorization.

2389997500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The square root of 2389997500 is about 48887.6006774724. The cubic root of 2389997500 is about 1337.0033093279.

The spelling of 2389997500 in words is "two billion, three hundred eighty-nine million, nine hundred ninety-seven thousand, five hundred".