18023389311 has 8 divisors (see below), whose sum is σ = 24039110704. Its totient is φ = 12011630400.

The previous prime is 18023389291. The next prime is 18023389313. The reversal of 18023389311 is 11398332081.

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

It is not a de Polignac number, because 18023389311 - 2¹³ = 18023381119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18023389311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023389313) 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, 979990 + ... + 998211.

It is an arithmetic number, because the mean of its divisors is an integer number (3004888838).

Almost surely, 2^18023389311 is an apocalyptic number.

18023389311 is a deficient number, since it is larger than the sum of its proper divisors (6015721393).

18023389311 is a wasteful number, since it uses less digits than its factorization.

18023389311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981241.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 18023389311 in words is "eighteen billion, twenty-three million, three hundred eighty-nine thousand, three hundred eleven".