181409230 has 8 divisors (see below), whose sum is σ = 326536632. Its totient is φ = 72563688.

The previous prime is 181409219. The next prime is 181409233. The reversal of 181409230 is 32904181.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181409233) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9070452 + ... + 9070471.

It is an arithmetic number, because the mean of its divisors is an integer number (40817079).

Almost surely, 2^181409230 is an apocalyptic number.

181409230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181409230 is a deficient number, since it is larger than the sum of its proper divisors (145127402).

181409230 is a wasteful number, since it uses less digits than its factorization.

181409230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18140930.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 181409230 is about 13468.8243733445. The cubic root of 181409230 is about 566.0912733059.

The spelling of 181409230 in words is "one hundred eighty-one million, four hundred nine thousand, two hundred thirty".