18764320093 has 8 divisors (see below), whose sum is σ = 19049273568. Its totient is φ = 18479510544.

The previous prime is 18764320087. The next prime is 18764320117. The reversal of 18764320093 is 39002346781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18764320093 - 2²⁵ = 18730765661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18764320493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243030 + ... + 310792.

It is an arithmetic number, because the mean of its divisors is an integer number (2381159196).

Almost surely, 2^18764320093 is an apocalyptic number.

It is an amenable number.

18764320093 is a deficient number, since it is larger than the sum of its proper divisors (284953475).

18764320093 is an equidigital number, since it uses as much as digits as its factorization.

18764320093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71963.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 18764320093 in words is "eighteen billion, seven hundred sixty-four million, three hundred twenty thousand, ninety-three".