18114919689 has 4 divisors (see below), whose sum is σ = 24153226256. Its totient is φ = 12076613124.

The previous prime is 18114919639. The next prime is 18114919703. The reversal of 18114919689 is 98691941181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18114919689 - 2¹¹ = 18114917641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18114919639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3019153279 + ... + 3019153284.

It is an arithmetic number, because the mean of its divisors is an integer number (6038306564).

Almost surely, 2^18114919689 is an apocalyptic number.

It is an amenable number.

18114919689 is a deficient number, since it is larger than the sum of its proper divisors (6038306567).

18114919689 is an equidigital number, since it uses as much as digits as its factorization.

18114919689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6038306566.

The product of its digits is 1119744, while the sum is 57.

The spelling of 18114919689 in words is "eighteen billion, one hundred fourteen million, nine hundred nineteen thousand, six hundred eighty-nine".