2851785065 has 8 divisors (see below), whose sum is σ = 3570931008. Its totient is φ = 2182235440.

The previous prime is 2851785061. The next prime is 2851785073. The reversal of 2851785065 is 5605871582.

It is a happy number.

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

It is not a de Polignac number, because 2851785065 - 2² = 2851785061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2851785061) 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, 12398951 + ... + 12399180.

It is an arithmetic number, because the mean of its divisors is an integer number (446366376).

Almost surely, 2^2851785065 is an apocalyptic number.

It is an amenable number.

2851785065 is a deficient number, since it is larger than the sum of its proper divisors (719145943).

2851785065 is a wasteful number, since it uses less digits than its factorization.

2851785065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24798159.

The product of its (nonzero) digits is 672000, while the sum is 47.

The square root of 2851785065 is about 53402.1073086072. The cubic root of 2851785065 is about 1418.0958848468.

The spelling of 2851785065 in words is "two billion, eight hundred fifty-one million, seven hundred eighty-five thousand, sixty-five".