381896559 has 16 divisors (see below), whose sum is σ = 617207040. Its totient is φ = 231452280.

The previous prime is 381896521. The next prime is 381896579. The reversal of 381896559 is 955698183.

It is a happy number.

381896559 is a `hidden beast` number, since 3 + 8 + 1 + 89 + 6 + 559 = 666.

It is not a de Polignac number, because 381896559 - 2²³ = 373507951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381896519) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 642627 + ... + 643220.

It is an arithmetic number, because the mean of its divisors is an integer number (38575440).

Almost surely, 2^381896559 is an apocalyptic number.

381896559 is a deficient number, since it is larger than the sum of its proper divisors (235310481).

381896559 is a wasteful number, since it uses less digits than its factorization.

381896559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285867 (or 1285861 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 381896559 is about 19542.1738555361. The cubic root of 381896559 is about 725.5186516284.

The spelling of 381896559 in words is "three hundred eighty-one million, eight hundred ninety-six thousand, five hundred fifty-nine".