810368855 has 4 divisors (see below), whose sum is σ = 972442632. Its totient is φ = 648295080.

The previous prime is 810368809. The next prime is 810368891. The reversal of 810368855 is 558863018.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-810368855 is a prime.

It is a super-2 number, since 2×810368855² = 1313395362308022050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 81036881 + ... + 81036890.

It is an arithmetic number, because the mean of its divisors is an integer number (243110658).

Almost surely, 2^810368855 is an apocalyptic number.

810368855 is a deficient number, since it is larger than the sum of its proper divisors (162073777).

810368855 is a wasteful number, since it uses less digits than its factorization.

810368855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162073776.

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 810368855 is about 28466.9783257725. The cubic root of 810368855 is about 932.3112263933.

The spelling of 810368855 in words is "eight hundred ten million, three hundred sixty-eight thousand, eight hundred fifty-five".