18069065889 has 16 divisors (see below), whose sum is σ = 27536329728. Its totient is φ = 10324237392.

The previous prime is 18069065851. The next prime is 18069065891. The reversal of 18069065889 is 98856096081.

It is not a de Polignac number, because 18069065889 - 2¹² = 18069061793 is a prime.

It is a super-2 number, since 2×18069065889² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18069065899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243364 + ... + 308810.

It is an arithmetic number, because the mean of its divisors is an integer number (1721020608).

Almost surely, 2^18069065889 is an apocalyptic number.

It is an amenable number.

18069065889 is a deficient number, since it is larger than the sum of its proper divisors (9467263839).

18069065889 is a wasteful number, since it uses less digits than its factorization.

18069065889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78604.

The product of its (nonzero) digits is 7464960, while the sum is 60.

The spelling of 18069065889 in words is "eighteen billion, sixty-nine million, sixty-five thousand, eight hundred eighty-nine".