18671483489 has 4 divisors (see below), whose sum is σ = 19273789440. Its totient is φ = 18069177540.

The previous prime is 18671483477. The next prime is 18671483563. The reversal of 18671483489 is 98438417681.

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 a de Polignac number, because none of the positive numbers 2^k-18671483489 is a prime.

It is a super-2 number, since 2×18671483489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18671483449) 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, 301152929 + ... + 301152990.

It is an arithmetic number, because the mean of its divisors is an integer number (4818447360).

Almost surely, 2^18671483489 is an apocalyptic number.

It is an amenable number.

18671483489 is a deficient number, since it is larger than the sum of its proper divisors (602305951).

18671483489 is an equidigital number, since it uses as much as digits as its factorization.

18671483489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602305950.

The product of its digits is 9289728, while the sum is 59.

The spelling of 18671483489 in words is "eighteen billion, six hundred seventy-one million, four hundred eighty-three thousand, four hundred eighty-nine".