8243751138 has 32 divisors (see below), whose sum is σ = 18986711040. Its totient is φ = 2337376080.

The previous prime is 8243751137. The next prime is 8243751151. The reversal of 8243751138 is 8311573428.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 8243751138.

It is not an unprimeable number, because it can be changed into a prime (8243751137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743658 + ... + 754661.

It is an arithmetic number, because the mean of its divisors is an integer number (593334720).

Almost surely, 2^8243751138 is an apocalyptic number.

8243751138 is an abundant number, since it is smaller than the sum of its proper divisors (10742959902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8243751138 is a wasteful number, since it uses less digits than its factorization.

8243751138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498462.

The product of its digits is 161280, while the sum is 42.

The square root of 8243751138 is about 90795.1052535323. The cubic root of 8243751138 is about 2020.1097167802.

The spelling of 8243751138 in words is "eight billion, two hundred forty-three million, seven hundred fifty-one thousand, one hundred thirty-eight".