857801203 has 6 divisors (see below), whose sum is σ = 997850436. Its totient is φ = 735258132.

The previous prime is 857801149. The next prime is 857801207. The reversal of 857801203 is 302108758.

It is a de Polignac number, because none of the positive numbers 2^k-857801203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857801207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8753025 + ... + 8753122.

It is an arithmetic number, because the mean of its divisors is an integer number (166308406).

Almost surely, 2^857801203 is an apocalyptic number.

857801203 is a deficient number, since it is larger than the sum of its proper divisors (140049233).

857801203 is a wasteful number, since it uses less digits than its factorization.

857801203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17506161 (or 17506154 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 857801203 is about 29288.2434263306. The cubic root of 857801203 is about 950.1573896204.

The spelling of 857801203 in words is "eight hundred fifty-seven million, eight hundred one thousand, two hundred three".