2085398005 has 8 divisors (see below), whose sum is σ = 2527255224. Its totient is φ = 1651800000.

The previous prime is 2085397999. The next prime is 2085398023. The reversal of 2085398005 is 5008935802.

It can be written as a sum of positive squares in 4 ways, for example, as 1197298404 + 888099601 = 34602^2 + 29801^2 .

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

It is not a de Polignac number, because 2085398005 - 2²⁷ = 1951180277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2064246 + ... + 2065255.

It is an arithmetic number, because the mean of its divisors is an integer number (315906903).

Almost surely, 2^2085398005 is an apocalyptic number.

It is an amenable number.

2085398005 is a deficient number, since it is larger than the sum of its proper divisors (441857219).

2085398005 is a wasteful number, since it uses less digits than its factorization.

2085398005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129607.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 2085398005 is about 45666.1582027654. The cubic root of 2085398005 is about 1277.6041619872.

The spelling of 2085398005 in words is "two billion, eighty-five million, three hundred ninety-eight thousand, five".