18883388669 has 4 divisors (see below), whose sum is σ = 19285162944. Its totient is φ = 18481614396.

The previous prime is 18883388653. The next prime is 18883388731. The reversal of 18883388669 is 96688338881.

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 a cyclic number.

It is not a de Polignac number, because 18883388669 - 2⁴ = 18883388653 is a prime.

It is a super-2 number, since 2×18883388669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18883388599 and 18883388608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18883388609) 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, 200887067 + ... + 200887160.

It is an arithmetic number, because the mean of its divisors is an integer number (4821290736).

Almost surely, 2^18883388669 is an apocalyptic number.

It is an amenable number.

18883388669 is a deficient number, since it is larger than the sum of its proper divisors (401774275).

18883388669 is an equidigital number, since it uses as much as digits as its factorization.

18883388669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401774274.

The product of its digits is 95551488, while the sum is 68.

The spelling of 18883388669 in words is "eighteen billion, eight hundred eighty-three million, three hundred eighty-eight thousand, six hundred sixty-nine".