2851869 has 16 divisors (see below), whose sum is σ = 4060800. Its totient is φ = 1774080.

The previous prime is 2851867. The next prime is 2851873. The reversal of 2851869 is 9681582.

It is not a de Polignac number, because 2851869 - 2¹ = 2851867 is a prime.

It is a super-2 number, since 2×2851869² = 16266313586322, which contains 22 as substring.

It is a Curzon number.

2851869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10009 + ... + 10289.

It is an arithmetic number, because the mean of its divisors is an integer number (253800).

2^2851869 is an apocalyptic number.

It is an amenable number.

2851869 is a deficient number, since it is larger than the sum of its proper divisors (1208931).

2851869 is a wasteful number, since it uses less digits than its factorization.

2851869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500.

The product of its digits is 34560, while the sum is 39.

The square root of 2851869 is about 1688.7477609164. The cubic root of 2851869 is about 141.8109797386.

The spelling of 2851869 in words is "two million, eight hundred fifty-one thousand, eight hundred sixty-nine".