18359738405 has 8 divisors (see below), whose sum is σ = 22078865952. Its totient is φ = 14656337488.

The previous prime is 18359738359. The next prime is 18359738407. The reversal of 18359738405 is 50483795381.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18359738405 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18359738407) 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 7 ways as a sum of consecutive naturals, for example, 3929087 + ... + 3933756.

It is an arithmetic number, because the mean of its divisors is an integer number (2759858244).

Almost surely, 2^18359738405 is an apocalyptic number.

It is an amenable number.

18359738405 is a deficient number, since it is larger than the sum of its proper divisors (3719127547).

18359738405 is an equidigital number, since it uses as much as digits as its factorization.

18359738405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863315.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 18359738405 in words is "eighteen billion, three hundred fifty-nine million, seven hundred thirty-eight thousand, four hundred five".