381888722 has 8 divisors (see below), whose sum is σ = 573467376. Its totient is φ = 190732932.

The previous prime is 381888707. The next prime is 381888743. The reversal of 381888722 is 227888183.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 103448 + ... + 107075.

It is an arithmetic number, because the mean of its divisors is an integer number (71683422).

Almost surely, 2^381888722 is an apocalyptic number.

381888722 is a deficient number, since it is larger than the sum of its proper divisors (191578654).

381888722 is a wasteful number, since it uses less digits than its factorization.

381888722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211432.

The product of its digits is 344064, while the sum is 47.

The square root of 381888722 is about 19541.9733394558. The cubic root of 381888722 is about 725.5136887413.

The spelling of 381888722 in words is "three hundred eighty-one million, eight hundred eighty-eight thousand, seven hundred twenty-two".