18706497127 has 4 divisors (see below), whose sum is σ = 18781025256. Its totient is φ = 18631969000.

The previous prime is 18706497079. The next prime is 18706497193. The reversal of 18706497127 is 72179460781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72179460781 = 257 ⋅280853933.

It is a cyclic number.

It is not a de Polignac number, because 18706497127 - 2⁷ = 18706496999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18706497197) 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 3 ways as a sum of consecutive naturals, for example, 37263688 + ... + 37264189.

It is an arithmetic number, because the mean of its divisors is an integer number (4695256314).

Almost surely, 2^18706497127 is an apocalyptic number.

18706497127 is a deficient number, since it is larger than the sum of its proper divisors (74528129).

18706497127 is an equidigital number, since it uses as much as digits as its factorization.

18706497127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74528128.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The spelling of 18706497127 in words is "eighteen billion, seven hundred six million, four hundred ninety-seven thousand, one hundred twenty-seven".