18072031859 has 8 divisors (see below), whose sum is σ = 20655030528. Its totient is φ = 15489353160.

The previous prime is 18072031853. The next prime is 18072031871. The reversal of 18072031859 is 95813027081.

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-18072031859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18072031853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56594 + ... + 198360.

It is an arithmetic number, because the mean of its divisors is an integer number (2581878816).

Almost surely, 2^18072031859 is an apocalyptic number.

18072031859 is a deficient number, since it is larger than the sum of its proper divisors (2582998669).

18072031859 is a wasteful number, since it uses less digits than its factorization.

18072031859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159985.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 18072031859 in words is "eighteen billion, seventy-two million, thirty-one thousand, eight hundred fifty-nine".