2853861 has 8 divisors (see below), whose sum is σ = 3936480. Its totient is φ = 1836912.

The previous prime is 2853853. The next prime is 2853869. The reversal of 2853861 is 1683582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2853853) and next prime (2853869).

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

It is not a de Polignac number, because 2853861 - 2³ = 2853853 is a prime.

2853861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2853869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16315 + ... + 16488.

It is an arithmetic number, because the mean of its divisors is an integer number (492060).

2^2853861 is an apocalyptic number.

It is an amenable number.

2853861 is a deficient number, since it is larger than the sum of its proper divisors (1082619).

2853861 is a wasteful number, since it uses less digits than its factorization.

2853861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32835.

The product of its digits is 11520, while the sum is 33.

The square root of 2853861 is about 1689.3374440887. The cubic root of 2853861 is about 141.8439898716.

The spelling of 2853861 in words is "two million, eight hundred fifty-three thousand, eight hundred sixty-one".