2638876389 has 16 divisors (see below), whose sum is σ = 3740364480. Its totient is φ = 1650153600.

The previous prime is 2638876381. The next prime is 2638876393. The reversal of 2638876389 is 9836788362.

2638876389 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 2638876389 - 2³ = 2638876381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638876381) 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, 223432 + ... + 234945.

It is an arithmetic number, because the mean of its divisors is an integer number (233772780).

Almost surely, 2^2638876389 is an apocalyptic number.

It is an amenable number.

2638876389 is a deficient number, since it is larger than the sum of its proper divisors (1101488091).

2638876389 is a wasteful number, since it uses less digits than its factorization.

2638876389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458500.

The product of its digits is 20901888, while the sum is 60.

The square root of 2638876389 is about 51369.9950262797. The cubic root of 2638876389 is about 1381.8885417248. Note that the first 3 decimals are identical.

The spelling of 2638876389 in words is "two billion, six hundred thirty-eight million, eight hundred seventy-six thousand, three hundred eighty-nine".