18540191824 has 80 divisors (see below), whose sum is σ = 46230183936. Its totient is φ = 6990422400.

The previous prime is 18540191821. The next prime is 18540191833. The reversal of 18540191824 is 42819104581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18540191821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204532 + ... + 280915.

Almost surely, 2^18540191824 is an apocalyptic number.

18540191824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18540191824 is an abundant number, since it is smaller than the sum of its proper divisors (27689992112).

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

18540191824 is a wasteful number, since it uses less digits than its factorization.

18540191824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485504 (or 485498 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 18540191824 in words is "eighteen billion, five hundred forty million, one hundred ninety-one thousand, eight hundred twenty-four".