181483894 has 4 divisors (see below), whose sum is σ = 272225844. Its totient is φ = 90741946.

The previous prime is 181483879. The next prime is 181483901. The reversal of 181483894 is 498384181.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45370972 + ... + 45370975.

It is an arithmetic number, because the mean of its divisors is an integer number (68056461).

Almost surely, 2^181483894 is an apocalyptic number.

181483894 is a deficient number, since it is larger than the sum of its proper divisors (90741950).

181483894 is an equidigital number, since it uses as much as digits as its factorization.

181483894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90741949.

The product of its digits is 221184, while the sum is 46.

The square root of 181483894 is about 13471.5958223219. The cubic root of 181483894 is about 566.1689261748.

The spelling of 181483894 in words is "one hundred eighty-one million, four hundred eighty-three thousand, eight hundred ninety-four".