2164851 has 12 divisors (see below), whose sum is σ = 3367728. Its totient is φ = 1332144.

The previous prime is 2164843. The next prime is 2164853. The reversal of 2164851 is 1584612.

It is not a de Polignac number, because 2164851 - 2³ = 2164843 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2164853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9135 + ... + 9368.

It is an arithmetic number, because the mean of its divisors is an integer number (280644).

2^2164851 is an apocalyptic number.

2164851 is a deficient number, since it is larger than the sum of its proper divisors (1202877).

2164851 is a wasteful number, since it uses less digits than its factorization.

2164851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18522 (or 18519 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2164851 is about 1471.3432638239. The cubic root of 2164851 is about 129.3627790739.

The spelling of 2164851 in words is "two million, one hundred sixty-four thousand, eight hundred fifty-one".