18674980693 has 4 divisors (see below), whose sum is σ = 18675308160. Its totient is φ = 18674653228.

The previous prime is 18674980691. The next prime is 18674980703. The reversal of 18674980693 is 39608947681.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39608947681 = 829 ⋅47779189.

It is a cyclic number.

It is not a de Polignac number, because 18674980693 - 2¹ = 18674980691 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 (18674980691) 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, 53413 + ... + 200506.

It is an arithmetic number, because the mean of its divisors is an integer number (4668827040).

Almost surely, 2^18674980693 is an apocalyptic number.

It is an amenable number.

18674980693 is a deficient number, since it is larger than the sum of its proper divisors (327467).

18674980693 is an equidigital number, since it uses as much as digits as its factorization.

18674980693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327466.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 18674980693 in words is "eighteen billion, six hundred seventy-four million, nine hundred eighty thousand, six hundred ninety-three".