181413486 has 16 divisors (see below), whose sum is σ = 403141200. Its totient is φ = 60471144.

The previous prime is 181413469. The next prime is 181413499. The reversal of 181413486 is 684314181.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 181413486.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679701 + ... + 1679808.

It is an arithmetic number, because the mean of its divisors is an integer number (25196325).

Almost surely, 2^181413486 is an apocalyptic number.

181413486 is an abundant number, since it is smaller than the sum of its proper divisors (221727714).

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

181413486 is a wasteful number, since it uses less digits than its factorization.

181413486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359520 (or 3359514 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 181413486 is about 13468.9823669051. The cubic root of 181413486 is about 566.0957002501.

The spelling of 181413486 in words is "one hundred eighty-one million, four hundred thirteen thousand, four hundred eighty-six".