18675671485 has 4 divisors (see below), whose sum is σ = 22410805788. Its totient is φ = 14940537184.

The previous prime is 18675671461. The next prime is 18675671557. The reversal of 18675671485 is 58417657681.

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 3226921636 + 15448749849 = 56806^2 + 124293^2 .

It is a cyclic number.

It is not a de Polignac number, because 18675671485 - 2⁹ = 18675670973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1867567144 + ... + 1867567153.

It is an arithmetic number, because the mean of its divisors is an integer number (5602701447).

Almost surely, 2^18675671485 is an apocalyptic number.

It is an amenable number.

18675671485 is a deficient number, since it is larger than the sum of its proper divisors (3735134303).

18675671485 is an equidigital number, since it uses as much as digits as its factorization.

18675671485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735134302.

The product of its digits is 11289600, while the sum is 58.

The spelling of 18675671485 in words is "eighteen billion, six hundred seventy-five million, six hundred seventy-one thousand, four hundred eighty-five".