18005022319 has 8 divisors (see below), whose sum is σ = 18206385120. Its totient is φ = 17804317536.

The previous prime is 18005022317. The next prime is 18005022341. The reversal of 18005022319 is 91322050081.

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 18005022319 - 2¹ = 18005022317 is a prime.

It is a super-2 number, since 2×18005022319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18005022313) 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, 109372 + ... + 219025.

It is an arithmetic number, because the mean of its divisors is an integer number (2275798140).

Almost surely, 2^18005022319 is an apocalyptic number.

18005022319 is a deficient number, since it is larger than the sum of its proper divisors (201362801).

18005022319 is a wasteful number, since it uses less digits than its factorization.

18005022319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329009.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 18005022319 in words is "eighteen billion, five million, twenty-two thousand, three hundred nineteen".