180118073899 has 4 divisors (see below), whose sum is σ = 181493021160. Its totient is φ = 178743126640.

The previous prime is 180118073893. The next prime is 180118073929. The reversal of 180118073899 is 998370811081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 180118073899 - 2¹⁹ = 180117549611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180118073893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687473434 + ... + 687473695.

It is an arithmetic number, because the mean of its divisors is an integer number (45373255290).

Almost surely, 2^180118073899 is an apocalyptic number.

180118073899 is a deficient number, since it is larger than the sum of its proper divisors (1374947261).

180118073899 is a wasteful number, since it uses less digits than its factorization.

180118073899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374947260.

The product of its (nonzero) digits is 870912, while the sum is 55.

The spelling of 180118073899 in words is "one hundred eighty billion, one hundred eighteen million, seventy-three thousand, eight hundred ninety-nine".