18474747485 has 8 divisors (see below), whose sum is σ = 22194038016. Its totient is φ = 14763570640.

The previous prime is 18474747469. The next prime is 18474747497. The reversal of 18474747485 is 58474747481.

It is a happy number.

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

It is not a de Polignac number, because 18474747485 - 2⁴ = 18474747469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023409 + ... + 2032518.

It is an arithmetic number, because the mean of its divisors is an integer number (2774254752).

Almost surely, 2^18474747485 is an apocalyptic number.

It is an amenable number.

18474747485 is a deficient number, since it is larger than the sum of its proper divisors (3719290531).

18474747485 is an equidigital number, since it uses as much as digits as its factorization.

18474747485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056843.

The product of its digits is 28098560, while the sum is 59.

It can be divided in two parts, 184747 and 47485, that added together give a palindrome (232232).

The spelling of 18474747485 in words is "eighteen billion, four hundred seventy-four million, seven hundred forty-seven thousand, four hundred eighty-five".