18485457345 has 48 divisors (see below), whose sum is σ = 32180428800. Its totient is φ = 9816266880.

The previous prime is 18485457337. The next prime is 18485457377. The reversal of 18485457345 is 54375458481.

It is a happy number.

18485457345 is a `hidden beast` number, since 1 + 84 + 85 + 457 + 34 + 5 = 666.

It is not a de Polignac number, because 18485457345 - 2³ = 18485457337 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18485457291 and 18485457300.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14452416 + ... + 14453694.

It is an arithmetic number, because the mean of its divisors is an integer number (670425600).

Almost surely, 2^18485457345 is an apocalyptic number.

18485457345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18485457345 is a deficient number, since it is larger than the sum of its proper divisors (13694971455).

18485457345 is a wasteful number, since it uses less digits than its factorization.

18485457345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430 (or 2427 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 54.

The spelling of 18485457345 in words is "eighteen billion, four hundred eighty-five million, four hundred fifty-seven thousand, three hundred forty-five".