181982022 has 16 divisors (see below), whose sum is σ = 365048112. Its totient is φ = 60480000.

The previous prime is 181982011. The next prime is 181982023. The reversal of 181982022 is 220289181.

181982022 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 42979 + ... + 47022.

It is an arithmetic number, because the mean of its divisors is an integer number (22815507).

Almost surely, 2^181982022 is an apocalyptic number.

181982022 is an abundant number, since it is smaller than the sum of its proper divisors (183066090).

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

181982022 is a wasteful number, since it uses less digits than its factorization.

181982022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90343.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 181982022 is about 13490.0712377659. The cubic root of 181982022 is about 566.6864504435.

It can be divided in two parts, 18198 and 2022, that multiplied together give a square (36796356 = 6066²).

The spelling of 181982022 in words is "one hundred eighty-one million, nine hundred eighty-two thousand, twenty-two".