2644530987 has 16 divisors (see below), whose sum is σ = 4095825152. Its totient is φ = 1486386720.

The previous prime is 2644530949. The next prime is 2644530989. The reversal of 2644530987 is 7890354462.

2644530987 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 2644530987 - 2¹² = 2644526891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2644530989) 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, 1030933 + ... + 1033494.

It is an arithmetic number, because the mean of its divisors is an integer number (255989072).

Almost surely, 2^2644530987 is an apocalyptic number.

2644530987 is a deficient number, since it is larger than the sum of its proper divisors (1451294165).

2644530987 is a wasteful number, since it uses less digits than its factorization.

2644530987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064498.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The square root of 2644530987 is about 51425.0035196887. The cubic root of 2644530987 is about 1382.8748768612.

The spelling of 2644530987 in words is "two billion, six hundred forty-four million, five hundred thirty thousand, nine hundred eighty-seven".