855371813 has 8 divisors (see below), whose sum is σ = 906729408. Its totient is φ = 804129984.

The previous prime is 855371801. The next prime is 855371827. The reversal of 855371813 is 318173558.

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 855371813 - 2⁶ = 855371749 is a prime.

It is a super-3 number, since 3×855371813³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855371873) 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 7 ways as a sum of consecutive naturals, for example, 13481 + ... + 43502.

It is an arithmetic number, because the mean of its divisors is an integer number (113341176).

Almost surely, 2^855371813 is an apocalyptic number.

It is an amenable number.

855371813 is a deficient number, since it is larger than the sum of its proper divisors (51357595).

855371813 is a wasteful number, since it uses less digits than its factorization.

855371813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57883.

The product of its digits is 100800, while the sum is 41.

The square root of 855371813 is about 29246.7402115176. The cubic root of 855371813 is about 949.2595571107.

The spelling of 855371813 in words is "eight hundred fifty-five million, three hundred seventy-one thousand, eight hundred thirteen".