18675690669 has 16 divisors (see below), whose sum is σ = 27978566400. Its totient is φ = 12310566048.

The previous prime is 18675690659. The next prime is 18675690701. The reversal of 18675690669 is 96609657681.

18675690669 is a `hidden beast` number, since 1 + 8 + 6 + 7 + 569 + 0 + 6 + 69 = 666.

It is not a de Polignac number, because 18675690669 - 2⁸ = 18675690413 is a prime.

It is a super-2 number, since 2×18675690669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18675690659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3883509 + ... + 3888314.

It is an arithmetic number, because the mean of its divisors is an integer number (1748660400).

Almost surely, 2^18675690669 is an apocalyptic number.

It is an amenable number.

18675690669 is a deficient number, since it is larger than the sum of its proper divisors (9302875731).

18675690669 is an equidigital number, since it uses as much as digits as its factorization.

18675690669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771921 (or 7771915 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 18675690669 in words is "eighteen billion, six hundred seventy-five million, six hundred ninety thousand, six hundred sixty-nine".