18056338739 has 8 divisors (see below), whose sum is σ = 18182166000. Its totient is φ = 17930648736.

The previous prime is 18056338717. The next prime is 18056338823. The reversal of 18056338739 is 93783365081.

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 18056338739 - 2⁸ = 18056338483 is a prime.

It is a super-2 number, since 2×18056338739² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18056332739) 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, 237137 + ... + 303885.

It is an arithmetic number, because the mean of its divisors is an integer number (2272770750).

Almost surely, 2^18056338739 is an apocalyptic number.

18056338739 is a deficient number, since it is larger than the sum of its proper divisors (125827261).

18056338739 is a wasteful number, since it uses less digits than its factorization.

18056338739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68629.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 18056338739 in words is "eighteen billion, fifty-six million, three hundred thirty-eight thousand, seven hundred thirty-nine".