181330996 has 24 divisors (see below), whose sum is σ = 395631936. Its totient is φ = 70648320.

The previous prime is 181330951. The next prime is 181330999. The reversal of 181330996 is 699033181.

181330996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×181330996² = 65761860220704032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181330999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294061 + ... + 294676.

It is an arithmetic number, because the mean of its divisors is an integer number (16484664).

Almost surely, 2^181330996 is an apocalyptic number.

It is an amenable number.

181330996 is an abundant number, since it is smaller than the sum of its proper divisors (214300940).

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

181330996 is a wasteful number, since it uses less digits than its factorization.

181330996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588759 (or 588757 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 181330996 is about 13465.9197977710. The cubic root of 181330996 is about 566.0098846638.

The spelling of 181330996 in words is "one hundred eighty-one million, three hundred thirty thousand, nine hundred ninety-six".