2645580387 has 16 divisors (see below), whose sum is σ = 3714844160. Its totient is φ = 1670105952.

The previous prime is 2645580337. The next prime is 2645580389. The reversal of 2645580387 is 7830855462.

2645580387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2645580387 - 2⁶ = 2645580323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645580389) 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, 126093 + ... + 145569.

It is an arithmetic number, because the mean of its divisors is an integer number (232177760).

Almost surely, 2^2645580387 is an apocalyptic number.

2645580387 is a deficient number, since it is larger than the sum of its proper divisors (1069263773).

2645580387 is a wasteful number, since it uses less digits than its factorization.

2645580387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21882.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The square root of 2645580387 is about 51435.2057155408. The cubic root of 2645580387 is about 1383.0577696554.

The spelling of 2645580387 in words is "two billion, six hundred forty-five million, five hundred eighty thousand, three hundred eighty-seven".