18285254547 has 64 divisors (see below), whose sum is σ = 28626960384. Its totient is φ = 10167413760.

The previous prime is 18285254539. The next prime is 18285254567. The reversal of 18285254547 is 74545258281.

It is a happy number.

It is not a de Polignac number, because 18285254547 - 2³ = 18285254539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18285254547.

It is not an unprimeable number, because it can be changed into a prime (18285254527) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 57682033 + ... + 57682349.

It is an arithmetic number, because the mean of its divisors is an integer number (447296256).

Almost surely, 2^18285254547 is an apocalyptic number.

18285254547 is a deficient number, since it is larger than the sum of its proper divisors (10341705837).

18285254547 is a wasteful number, since it uses less digits than its factorization.

18285254547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788.

The product of its digits is 3584000, while the sum is 51.

The spelling of 18285254547 in words is "eighteen billion, two hundred eighty-five million, two hundred fifty-four thousand, five hundred forty-seven".