181013406 has 32 divisors (see below), whose sum is σ = 415265280. Its totient is φ = 51528096.

The previous prime is 181013363. The next prime is 181013423. The reversal of 181013406 is 604310181.

181013406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3855 + ... + 19413.

It is an arithmetic number, because the mean of its divisors is an integer number (12977040).

Almost surely, 2^181013406 is an apocalyptic number.

181013406 is an abundant number, since it is smaller than the sum of its proper divisors (234251874).

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

181013406 is a wasteful number, since it uses less digits than its factorization.

181013406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15848.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 181013406 is about 13454.1222679148. The cubic root of 181013406 is about 565.6792478154.

Adding to 181013406 its reverse (604310181), we get a palindrome (785323587).

The spelling of 181013406 in words is "one hundred eighty-one million, thirteen thousand, four hundred six".