381719306 has 16 divisors (see below), whose sum is σ = 607027200. Its totient is φ = 179709840.

The previous prime is 381719297. The next prime is 381719323. The reversal of 381719306 is 603917183.

381719306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 381719306.

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 in 7 ways as a sum of consecutive naturals, for example, 80906 + ... + 85493.

It is an arithmetic number, because the mean of its divisors is an integer number (37939200).

Almost surely, 2^381719306 is an apocalyptic number.

381719306 is a deficient number, since it is larger than the sum of its proper divisors (225307894).

381719306 is a wasteful number, since it uses less digits than its factorization.

381719306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166469.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 381719306 is about 19537.6381888907. The cubic root of 381719306 is about 725.4063871458.

The spelling of 381719306 in words is "three hundred eighty-one million, seven hundred nineteen thousand, three hundred six".