18868623883 has 4 divisors (see below), whose sum is σ = 19177945648. Its totient is φ = 18559302120.

The previous prime is 18868623877. The next prime is 18868623913. The reversal of 18868623883 is 38832686881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18868623883 - 2¹³ = 18868615691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61), and also a Moran number because the ratio is a prime number: 309321703 = 18868623883 / (1 + 8 + 8 + 6 + 8 + 6 + 2 + 3 + 8 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18868623803) 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, 154660791 + ... + 154660912.

It is an arithmetic number, because the mean of its divisors is an integer number (4794486412).

Almost surely, 2^18868623883 is an apocalyptic number.

18868623883 is a deficient number, since it is larger than the sum of its proper divisors (309321765).

18868623883 is an equidigital number, since it uses as much as digits as its factorization.

18868623883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309321764.

The product of its digits is 21233664, while the sum is 61.

The spelling of 18868623883 in words is "eighteen billion, eight hundred sixty-eight million, six hundred twenty-three thousand, eight hundred eighty-three".