181085542 has 36 divisors (see below), whose sum is σ = 314823348. Its totient is φ = 77463000.

The previous prime is 181085521. The next prime is 181085563. The reversal of 181085542 is 245580181.

181085542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (181085521) and next prime (181085563).

It is a junction number, because it is equal to n+sod(n) for n = 181085498 and 181085507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1199167 + ... + 1199317.

It is an arithmetic number, because the mean of its divisors is an integer number (8745093).

Almost surely, 2^181085542 is an apocalyptic number.

181085542 is a deficient number, since it is larger than the sum of its proper divisors (133737806).

181085542 is a wasteful number, since it uses less digits than its factorization.

181085542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 181085542 is about 13456.8028149334. The cubic root of 181085542 is about 565.7543811435.

The spelling of 181085542 in words is "one hundred eighty-one million, eighty-five thousand, five hundred forty-two".