381817222 has 4 divisors (see below), whose sum is σ = 572725836. Its totient is φ = 190908610.

The previous prime is 381817207. The next prime is 381817279. The reversal of 381817222 is 222718183.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95454304 + ... + 95454307.

It is an arithmetic number, because the mean of its divisors is an integer number (143181459).

Almost surely, 2^381817222 is an apocalyptic number.

381817222 is a deficient number, since it is larger than the sum of its proper divisors (190908614).

381817222 is a wasteful number, since it uses less digits than its factorization.

381817222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190908613.

The product of its digits is 10752, while the sum is 34.

The square root of 381817222 is about 19540.1438582217. The cubic root of 381817222 is about 725.4684072552.

The spelling of 381817222 in words is "three hundred eighty-one million, eight hundred seventeen thousand, two hundred twenty-two".