381315898 has 16 divisors (see below), whose sum is σ = 575406720. Its totient is φ = 189517536.

The previous prime is 381315889. The next prime is 381315911. The reversal of 381315898 is 898513183.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406486 + ... + 407422.

It is an arithmetic number, because the mean of its divisors is an integer number (35962920).

Almost surely, 2^381315898 is an apocalyptic number.

381315898 is a deficient number, since it is larger than the sum of its proper divisors (194090822).

381315898 is a wasteful number, since it uses less digits than its factorization.

381315898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

The product of its digits is 207360, while the sum is 46.

The square root of 381315898 is about 19527.3115917169. The cubic root of 381315898 is about 725.1507561249.

The spelling of 381315898 in words is "three hundred eighty-one million, three hundred fifteen thousand, eight hundred ninety-eight".