181089046 has 16 divisors (see below), whose sum is σ = 280465920. Its totient is φ = 87635520.

The previous prime is 181089043. The next prime is 181089067. The reversal of 181089046 is 640980181.

It is a happy number.

181089046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 181088996 and 181089014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181089043) 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, 1720 + ... + 19108.

It is an arithmetic number, because the mean of its divisors is an integer number (17529120).

Almost surely, 2^181089046 is an apocalyptic number.

181089046 is a deficient number, since it is larger than the sum of its proper divisors (99376874).

181089046 is a wasteful number, since it uses less digits than its factorization.

181089046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17559.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 181089046 is about 13456.9330086762. The cubic root of 181089046 is about 565.7580302303.

The spelling of 181089046 in words is "one hundred eighty-one million, eighty-nine thousand, forty-six".