381434855 has 8 divisors (see below), whose sum is σ = 463992432. Its totient is φ = 300967488.

The previous prime is 381434843. The next prime is 381434857. The reversal of 381434855 is 558434183.

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

It is a cyclic number.

It is not a de Polignac number, because 381434855 - 2⁴ = 381434839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381434857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522149 + ... + 522878.

It is an arithmetic number, because the mean of its divisors is an integer number (57999054).

Almost surely, 2^381434855 is an apocalyptic number.

381434855 is a deficient number, since it is larger than the sum of its proper divisors (82557577).

381434855 is a wasteful number, since it uses less digits than its factorization.

381434855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045105.

The product of its digits is 230400, while the sum is 41.

The square root of 381434855 is about 19530.3572675975. The cubic root of 381434855 is about 725.2261553676.

The spelling of 381434855 in words is "three hundred eighty-one million, four hundred thirty-four thousand, eight hundred fifty-five".