381820227 has 16 divisors (see below), whose sum is σ = 515817120. Its totient is φ = 251200512.

The previous prime is 381820223. The next prime is 381820237. The reversal of 381820227 is 722028183.

It is not a de Polignac number, because 381820227 - 2² = 381820223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381820223) 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 15 ways as a sum of consecutive naturals, for example, 111513 + ... + 114885.

It is an arithmetic number, because the mean of its divisors is an integer number (32238570).

Almost surely, 2^381820227 is an apocalyptic number.

381820227 is a deficient number, since it is larger than the sum of its proper divisors (133996893).

381820227 is a wasteful number, since it uses less digits than its factorization.

381820227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 381820227 is about 19540.2207510560. The cubic root of 381820227 is about 725.4703104580.

The spelling of 381820227 in words is "three hundred eighty-one million, eight hundred twenty thousand, two hundred twenty-seven".