18533534814 has 24 divisors (see below), whose sum is σ = 40165582392. Its totient is φ = 6176369520.

The previous prime is 18533534809. The next prime is 18533534867. The reversal of 18533534814 is 41843533581.

It is a happy number.

18533534814 is a `hidden beast` number, since 1 + 8 + 5 + 33 + 534 + 81 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18533534814.

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 11 ways as a sum of consecutive naturals, for example, 44124 + ... + 197519.

It is an arithmetic number, because the mean of its divisors is an integer number (1673565933).

Almost surely, 2^18533534814 is an apocalyptic number.

18533534814 is an abundant number, since it is smaller than the sum of its proper divisors (21632047578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18533534814 is a wasteful number, since it uses less digits than its factorization.

18533534814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245912 (or 245909 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 18533534814 in words is "eighteen billion, five hundred thirty-three million, five hundred thirty-four thousand, eight hundred fourteen".