181849222 has 8 divisors (see below), whose sum is σ = 274856472. Its totient is φ = 90230400.

The previous prime is 181849207. The next prime is 181849253. The reversal of 181849222 is 222948181.

It is a happy number.

181849222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 346779 + ... + 347302.

It is an arithmetic number, because the mean of its divisors is an integer number (34357059).

Almost surely, 2^181849222 is an apocalyptic number.

181849222 is a deficient number, since it is larger than the sum of its proper divisors (93007250).

181849222 is a wasteful number, since it uses less digits than its factorization.

181849222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694214.

The product of its digits is 18432, while the sum is 37.

The square root of 181849222 is about 13485.1482008912. The cubic root of 181849222 is about 566.5485718533.

It can be divided in two parts, 1818 and 49222, that added together give a triangular number (51040 = T₃₁₉).

The spelling of 181849222 in words is "one hundred eighty-one million, eight hundred forty-nine thousand, two hundred twenty-two".