181880222 has 8 divisors (see below), whose sum is σ = 275886000. Its totient is φ = 89918224.

The previous prime is 181880219. The next prime is 181880227. The reversal of 181880222 is 222088181.

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 (181880227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510722 + ... + 511077.

It is an arithmetic number, because the mean of its divisors is an integer number (34485750).

Almost surely, 2^181880222 is an apocalyptic number.

181880222 is a deficient number, since it is larger than the sum of its proper divisors (94005778).

181880222 is a wasteful number, since it uses less digits than its factorization.

181880222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021890.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 181880222 is about 13486.2975645653. The cubic root of 181880222 is about 566.5807633719.

The spelling of 181880222 in words is "one hundred eighty-one million, eight hundred eighty thousand, two hundred twenty-two".