18593440845 has 16 divisors (see below), whose sum is σ = 33999434880. Its totient is φ = 8499858624.

The previous prime is 18593440759. The next prime is 18593440847. The reversal of 18593440845 is 54804439581.

It is not a de Polignac number, because 18593440845 - 2¹⁴ = 18593424461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18593440847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88540090 + ... + 88540299.

It is an arithmetic number, because the mean of its divisors is an integer number (2124964680).

Almost surely, 2^18593440845 is an apocalyptic number.

18593440845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18593440845 is a deficient number, since it is larger than the sum of its proper divisors (15405994035).

18593440845 is a wasteful number, since it uses less digits than its factorization.

18593440845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177080404.

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 18593440845 in words is "eighteen billion, five hundred ninety-three million, four hundred forty thousand, eight hundred forty-five".