8118281793 has 32 divisors (see below), whose sum is σ = 11366796672. Its totient is φ = 5148057600.

The previous prime is 8118281771. The next prime is 8118281839. The reversal of 8118281793 is 3971828118.

It is a happy number.

It is not a de Polignac number, because 8118281793 - 2¹⁰ = 8118280769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8118281723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4023921 + ... + 4025937.

It is an arithmetic number, because the mean of its divisors is an integer number (355212396).

Almost surely, 2^8118281793 is an apocalyptic number.

It is an amenable number.

8118281793 is a deficient number, since it is larger than the sum of its proper divisors (3248514879).

8118281793 is a wasteful number, since it uses less digits than its factorization.

8118281793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865.

The product of its digits is 193536, while the sum is 48.

The square root of 8118281793 is about 90101.5082726144. The cubic root of 8118281793 is about 2009.8086328045.

The spelling of 8118281793 in words is "eight billion, one hundred eighteen million, two hundred eighty-one thousand, seven hundred ninety-three".