181850000 has 60 divisors (see below), whose sum is σ = 440510868. Its totient is φ = 72720000.

The previous prime is 181849991. The next prime is 181850017. The reversal of 181850000 is 58181.

181850000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 179238544 + 2611456 = 13388^2 + 1616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48182 + ... + 51818.

Almost surely, 2^181850000 is an apocalyptic number.

181850000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181850000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220255434).

181850000 is an abundant number, since it is smaller than the sum of its proper divisors (258660868).

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

181850000 is an frugal number, since it uses more digits than its factorization.

181850000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670 (or 3644 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 181850000 is about 13485.1770474102. The cubic root of 181850000 is about 566.5493798014.

The spelling of 181850000 in words is "one hundred eighty-one million, eight hundred fifty thousand".