7638132399 has 16 divisors (see below), whose sum is σ = 10639168512. Its totient is φ = 4865100768.

The previous prime is 7638132391. The next prime is 7638132409. The reversal of 7638132399 is 9932318367.

It is not a de Polignac number, because 7638132399 - 2³ = 7638132391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638132391) 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, 2599 + ... + 123624.

It is an arithmetic number, because the mean of its divisors is an integer number (664948032).

Almost surely, 2^7638132399 is an apocalyptic number.

7638132399 is a deficient number, since it is larger than the sum of its proper divisors (3001036113).

7638132399 is a wasteful number, since it uses less digits than its factorization.

7638132399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127126.

The product of its digits is 1469664, while the sum is 51.

The square root of 7638132399 is about 87396.4095315134. The cubic root of 7638132399 is about 1969.3779030675.

The spelling of 7638132399 in words is "seven billion, six hundred thirty-eight million, one hundred thirty-two thousand, three hundred ninety-nine".