381706853 has 8 divisors (see below), whose sum is σ = 422112576. Its totient is φ = 342252000.

The previous prime is 381706847. The next prime is 381706867. The reversal of 381706853 is 358607183.

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 381706853 - 2¹⁰ = 381705829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381706853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381706453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236873 + ... + 238478.

It is an arithmetic number, because the mean of its divisors is an integer number (52764072).

Almost surely, 2^381706853 is an apocalyptic number.

It is an amenable number.

381706853 is a deficient number, since it is larger than the sum of its proper divisors (40405723).

381706853 is a wasteful number, since it uses less digits than its factorization.

381706853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475435.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 381706853 is about 19537.3194937279. The cubic root of 381706853 is about 725.3984986408.

The spelling of 381706853 in words is "three hundred eighty-one million, seven hundred six thousand, eight hundred fifty-three".