181004304990 has 32 divisors (see below), whose sum is σ = 435825371520. Its totient is φ = 48110588064.

The previous prime is 181004304983. The next prime is 181004305103. The reversal of 181004304990 is 99403400181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9817300 + ... + 9835719.

It is an arithmetic number, because the mean of its divisors is an integer number (13619542860).

Almost surely, 2^181004304990 is an apocalyptic number.

181004304990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181004304990 is an abundant number, since it is smaller than the sum of its proper divisors (254821066530).

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

181004304990 is a wasteful number, since it uses less digits than its factorization.

181004304990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19653336.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 181004304990 in words is "one hundred eighty-one billion, four million, three hundred four thousand, nine hundred ninety".