181498116873 has 16 divisors (see below), whose sum is σ = 254751912000. Its totient is φ = 114622418880.

The previous prime is 181498116869. The next prime is 181498116929. The reversal of 181498116873 is 378611894181.

It is not a de Polignac number, because 181498116873 - 2² = 181498116869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (181498116803) 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, 778303 + ... + 984251.

It is an arithmetic number, because the mean of its divisors is an integer number (15921994500).

Almost surely, 2^181498116873 is an apocalyptic number.

It is an amenable number.

181498116873 is a deficient number, since it is larger than the sum of its proper divisors (73253795127).

181498116873 is a wasteful number, since it uses less digits than its factorization.

181498116873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221432.

The product of its digits is 2322432, while the sum is 57.

The spelling of 181498116873 in words is "one hundred eighty-one billion, four hundred ninety-eight million, one hundred sixteen thousand, eight hundred seventy-three".