2387645856 has 96 divisors (see below), whose sum is σ = 6980359680. Its totient is φ = 794009088.

The previous prime is 2387645851. The next prime is 2387645879. The reversal of 2387645856 is 6585467832.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2387645851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391825 + ... + 397871.

It is an arithmetic number, because the mean of its divisors is an integer number (72712080).

Almost surely, 2^2387645856 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 2387645856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3490179840).

2387645856 is an abundant number, since it is smaller than the sum of its proper divisors (4592713824).

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

2387645856 is a wasteful number, since it uses less digits than its factorization.

2387645856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523 (or 6509 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The square root of 2387645856 is about 48863.5432198689. The cubic root of 2387645856 is about 1336.5646495096.

The spelling of 2387645856 in words is "two billion, three hundred eighty-seven million, six hundred forty-five thousand, eight hundred fifty-six".