2085390903 has 4 divisors (see below), whose sum is σ = 2780521208. Its totient is φ = 1390260600.

The previous prime is 2085390877. The next prime is 2085390911. The reversal of 2085390903 is 3090935802.

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

It is not a de Polignac number, because 2085390903 - 2¹³ = 2085382711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085390403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347565148 + ... + 347565153.

It is an arithmetic number, because the mean of its divisors is an integer number (695130302).

Almost surely, 2^2085390903 is an apocalyptic number.

2085390903 is a deficient number, since it is larger than the sum of its proper divisors (695130305).

2085390903 is an equidigital number, since it uses as much as digits as its factorization.

2085390903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695130304.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 2085390903 is about 45666.0804427093. The cubic root of 2085390903 is about 1277.6027116557.

The spelling of 2085390903 in words is "two billion, eighty-five million, three hundred ninety thousand, nine hundred three".