18390000669 has 8 divisors (see below), whose sum is σ = 24795506880. Its totient is φ = 12122247456.

The previous prime is 18390000653. The next prime is 18390000677. The reversal of 18390000669 is 96600009381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18390000669 - 2⁴ = 18390000653 is a prime.

It is a super-2 number, since 2×18390000669² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18390000669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18390000679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34437937 + ... + 34438470.

It is an arithmetic number, because the mean of its divisors is an integer number (3099438360).

Almost surely, 2^18390000669 is an apocalyptic number.

It is an amenable number.

18390000669 is a deficient number, since it is larger than the sum of its proper divisors (6405506211).

18390000669 is an equidigital number, since it uses as much as digits as its factorization.

18390000669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68876499.

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 18390000669 in words is "eighteen billion, three hundred ninety million, six hundred sixty-nine", and thus it is an aban number.