816271903 has 8 divisors (see below), whose sum is σ = 858733200. Its totient is φ = 774764928.

The previous prime is 816271891. The next prime is 816271913. The reversal of 816271903 is 309172618.

816271903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 816271903 - 2⁵ = 816271871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816271913) 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, 236826 + ... + 240247.

It is an arithmetic number, because the mean of its divisors is an integer number (107341650).

Almost surely, 2^816271903 is an apocalyptic number.

816271903 is a deficient number, since it is larger than the sum of its proper divisors (42461297).

816271903 is a wasteful number, since it uses less digits than its factorization.

816271903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477161.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 816271903 is about 28570.4725722204. The cubic root of 816271903 is about 934.5695266447.

The spelling of 816271903 in words is "eight hundred sixteen million, two hundred seventy-one thousand, nine hundred three".