181839104 has 72 divisors (see below), whose sum is σ = 384108480. Its totient is φ = 85741568.

The previous prime is 181839061. The next prime is 181839107. The reversal of 181839104 is 401938181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181839107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523859 + ... + 524205.

It is an arithmetic number, because the mean of its divisors is an integer number (5334840).

Almost surely, 2^181839104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181839104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192054240).

181839104 is an abundant number, since it is smaller than the sum of its proper divisors (202269376).

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

181839104 is an equidigital number, since it uses as much as digits as its factorization.

181839104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 181839104 is about 13484.7730422132. The cubic root of 181839104 is about 566.5380641651.

The spelling of 181839104 in words is "one hundred eighty-one million, eight hundred thirty-nine thousand, one hundred four".