181982026 has 32 divisors (see below), whose sum is σ = 298142208. Its totient is φ = 83064960.

The previous prime is 181982023. The next prime is 181982051. The reversal of 181982026 is 620289181.

181982026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (181982023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87616 + ... + 89668.

It is an arithmetic number, because the mean of its divisors is an integer number (9316944).

Almost surely, 2^181982026 is an apocalyptic number.

181982026 is a deficient number, since it is larger than the sum of its proper divisors (116160182).

181982026 is a wasteful number, since it uses less digits than its factorization.

181982026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

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

The square root of 181982026 is about 13490.0713860231. The cubic root of 181982026 is about 566.6864545954.

It can be divided in two parts, 1819 and 82026, that added together give a triangular number (83845 = T₄₀₉).

The spelling of 181982026 in words is "one hundred eighty-one million, nine hundred eighty-two thousand, twenty-six".