181447842 has 8 divisors (see below), whose sum is σ = 362895696. Its totient is φ = 60482612.

The previous prime is 181447807. The next prime is 181447873. The reversal of 181447842 is 248744181.

It is a sphenic number, since it is the product of 3 distinct primes.

181447842 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 181447842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15120648 + ... + 15120659.

It is an arithmetic number, because the mean of its divisors is an integer number (45361962).

Almost surely, 2^181447842 is an apocalyptic number.

181447842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

181447842 is a wasteful number, since it uses less digits than its factorization.

181447842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30241312.

The product of its digits is 57344, while the sum is 39.

The square root of 181447842 is about 13470.2576812769. The cubic root of 181447842 is about 566.1314336396.

The spelling of 181447842 in words is "one hundred eighty-one million, four hundred forty-seven thousand, eight hundred forty-two".