18659127794 has 4 divisors (see below), whose sum is σ = 27988691694. Its totient is φ = 9329563896.

The previous prime is 18659127791. The next prime is 18659127811. The reversal of 18659127794 is 49772195681.

18659127794 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49772195681 = 13 ⋅3828630437.

It can be written as a sum of positive squares in only one way, i.e., 17170171225 + 1488956569 = 131035^2 + 38587^2 .

It is not an unprimeable number, because it can be changed into a prime (18659127791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4664781947 + ... + 4664781950.

Almost surely, 2^18659127794 is an apocalyptic number.

18659127794 is a deficient number, since it is larger than the sum of its proper divisors (9329563900).

18659127794 is an equidigital number, since it uses as much as digits as its factorization.

18659127794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329563899.

The product of its digits is 7620480, while the sum is 59.

The spelling of 18659127794 in words is "eighteen billion, six hundred fifty-nine million, one hundred twenty-seven thousand, seven hundred ninety-four".