18500047190445 has 32 divisors (see below), whose sum is σ = 29789177932800. Its totient is φ = 9803834514944.

The previous prime is 18500047190411. The next prime is 18500047190491. The reversal of 18500047190445 is 54409174000581.

It is a cyclic number.

It is not a de Polignac number, because 18500047190445 - 2³⁰ = 18498973448621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18500047190394 and 18500047190403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3851250 + ... + 7199459.

It is an arithmetic number, because the mean of its divisors is an integer number (930911810400).

Almost surely, 2^{18500047190445} is an apocalyptic number.

18500047190445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18500047190445 is a deficient number, since it is larger than the sum of its proper divisors (11289130742355).

18500047190445 is a wasteful number, since it uses less digits than its factorization.

18500047190445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11051429.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 18500047190445 in words is "eighteen trillion, five hundred billion, forty-seven million, one hundred ninety thousand, four hundred forty-five".