7638794314138 has 16 divisors (see below), whose sum is σ = 12339660251520. Its totient is φ = 3525577536816.

The previous prime is 7638794314103. The next prime is 7638794314139. The reversal of 7638794314138 is 8314134978367.

It is a happy number.

It is a super-4 number, since 4×7638794314138⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a self number, because there is not a number n which added to its sum of digits gives 7638794314138.

It is not an unprimeable number, because it can be changed into a prime (7638794314139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4540131 + ... + 5990857.

It is an arithmetic number, because the mean of its divisors is an integer number (771228765720).

Almost surely, 2^{7638794314138} is an apocalyptic number.

7638794314138 is a deficient number, since it is larger than the sum of its proper divisors (4700865937382).

7638794314138 is a wasteful number, since it uses less digits than its factorization.

7638794314138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653261.

The product of its digits is 73156608, while the sum is 64.

The spelling of 7638794314138 in words is "seven trillion, six hundred thirty-eight billion, seven hundred ninety-four million, three hundred fourteen thousand, one hundred thirty-eight".