2389874640 has 160 divisors (see below), whose sum is σ = 7613607936. Its totient is φ = 619799040.

The previous prime is 2389874621. The next prime is 2389874647. The reversal of 2389874640 is 464789832.

2389874640 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389874647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3787125 + ... + 3787755.

Almost surely, 2^2389874640 is an apocalyptic number.

2389874640 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 2389874640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3806803968).

2389874640 is an abundant number, since it is smaller than the sum of its proper divisors (5223733296).

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

2389874640 is a wasteful number, since it uses less digits than its factorization.

2389874640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 2389874640 is about 48886.3441054861. The cubic root of 2389874640 is about 1336.9803989774.

The spelling of 2389874640 in words is "two billion, three hundred eighty-nine million, eight hundred seventy-four thousand, six hundred forty".