180018187445 has 32 divisors (see below), whose sum is σ = 233345905920. Its totient is φ = 132912299520.

The previous prime is 180018187441. The next prime is 180018187483. The reversal of 180018187445 is 544781810081.

It is a happy number.

It is not a de Polignac number, because 180018187445 - 2² = 180018187441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180018187445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180018187441) 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, 5088257 + ... + 5123513.

It is an arithmetic number, because the mean of its divisors is an integer number (7292059560).

Almost surely, 2^180018187445 is an apocalyptic number.

It is an amenable number.

180018187445 is a deficient number, since it is larger than the sum of its proper divisors (53327718475).

180018187445 is a wasteful number, since it uses less digits than its factorization.

180018187445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36845.

The product of its (nonzero) digits is 286720, while the sum is 47.

The spelling of 180018187445 in words is "one hundred eighty billion, eighteen million, one hundred eighty-seven thousand, four hundred forty-five".