181246872858 has 32 divisors (see below), whose sum is σ = 375865147392. Its totient is φ = 58204537200.

The previous prime is 181246872853. The next prime is 181246872893. The reversal of 181246872858 is 858278642181.

It is a happy number.

181246872858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (181246872853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143378 + ... + 2226333.

It is an arithmetic number, because the mean of its divisors is an integer number (11745785856).

Almost surely, 2^181246872858 is an apocalyptic number.

181246872858 is an abundant number, since it is smaller than the sum of its proper divisors (194618274534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181246872858 is a wasteful number, since it uses less digits than its factorization.

181246872858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369970.

The product of its digits is 13762560, while the sum is 60.

The spelling of 181246872858 in words is "one hundred eighty-one billion, two hundred forty-six million, eight hundred seventy-two thousand, eight hundred fifty-eight".