2851849 has 36 divisors (see below), whose sum is σ = 4033092. Its totient is φ = 1995840.

The previous prime is 2851847. The next prime is 2851853. The reversal of 2851849 is 9481582.

It can be written as a sum of positive squares in 2 ways, for example, as 1517824 + 1334025 = 1232^2 + 1155^2 .

It is not a de Polignac number, because 2851849 - 2¹ = 2851847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (2851841) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 77059 + ... + 77095.

2^2851849 is an apocalyptic number.

It is an amenable number.

2851849 is a deficient number, since it is larger than the sum of its proper divisors (1181243).

2851849 is a wasteful number, since it uses less digits than its factorization.

2851849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 68 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 2851849 is about 1688.7418393585. The cubic root of 2851849 is about 141.8106482336.

2851849 divided by its sum of digits (37) gives a palindrome (77077).

The spelling of 2851849 in words is "two million, eight hundred fifty-one thousand, eight hundred forty-nine".