18086434445737 has 16 divisors (see below), whose sum is σ = 21464422060032. Its totient is φ = 14917358926080.

The previous prime is 18086434445731. The next prime is 18086434445747. The reversal of 18086434445737 is 73754443468081.

It is a cyclic number.

It is not a de Polignac number, because 18086434445737 - 2³⁵ = 18052074707369 is a prime.

It is a super-2 number, since 2×18086434445737² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18086434445731) 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 15 ways as a sum of consecutive naturals, for example, 431615593 + ... + 431657494.

It is an arithmetic number, because the mean of its divisors is an integer number (1341526378752).

Almost surely, 2^{18086434445737} is an apocalyptic number.

It is an amenable number.

18086434445737 is a deficient number, since it is larger than the sum of its proper divisors (3377987614295).

18086434445737 is an equidigital number, since it uses as much as digits as its factorization.

18086434445737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863273208.

The product of its (nonzero) digits is 216760320, while the sum is 64.

The spelling of 18086434445737 in words is "eighteen trillion, eighty-six billion, four hundred thirty-four million, four hundred forty-five thousand, seven hundred thirty-seven".