18480595669 has 4 divisors (see below), whose sum is σ = 18481016844. Its totient is φ = 18480174496.

The previous prime is 18480595643. The next prime is 18480595699. The reversal of 18480595669 is 96659508481.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4765140900 + 13715454769 = 69030^2 + 117113^2 .

It is a cyclic number.

It is not a de Polignac number, because 18480595669 - 2⁷ = 18480595541 is a prime.

It is a super-2 number, since 2×18480595669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18480595699) 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, 135952 + ... + 235465.

It is an arithmetic number, because the mean of its divisors is an integer number (4620254211).

Almost surely, 2^18480595669 is an apocalyptic number.

It is an amenable number.

18480595669 is a deficient number, since it is larger than the sum of its proper divisors (421175).

18480595669 is an equidigital number, since it uses as much as digits as its factorization.

18480595669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421174.

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 18480595669 in words is "eighteen billion, four hundred eighty million, five hundred ninety-five thousand, six hundred sixty-nine".