18089168546 has 64 divisors (see below), whose sum is σ = 30053597184. Its totient is φ = 8128512000.

The previous prime is 18089168483. The next prime is 18089168549. The reversal of 18089168546 is 64586198081.

It is a junction number, because it is equal to n+sod(n) for n = 18089168491 and 18089168500.

It is not an unprimeable number, because it can be changed into a prime (18089168549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45109946 + ... + 45110346.

It is an arithmetic number, because the mean of its divisors is an integer number (469587456).

Almost surely, 2^18089168546 is an apocalyptic number.

18089168546 is a deficient number, since it is larger than the sum of its proper divisors (11964428638).

18089168546 is a wasteful number, since it uses less digits than its factorization.

18089168546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915.

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 18089168546 in words is "eighteen billion, eighty-nine million, one hundred sixty-eight thousand, five hundred forty-six".