2149845 has 16 divisors (see below), whose sum is σ = 3458112. Its totient is φ = 1140480.

The previous prime is 2149813. The next prime is 2149853. The reversal of 2149845 is 5489412.

2149845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2149845 - 2⁵ = 2149813 is a prime.

2149845 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4749 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (216132).

2^2149845 is an apocalyptic number.

It is an amenable number.

2149845 is a deficient number, since it is larger than the sum of its proper divisors (1308267).

2149845 is a wasteful number, since it uses less digits than its factorization.

2149845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

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

The square root of 2149845 is about 1466.2349743476. The cubic root of 2149845 is about 129.0631863999.

The spelling of 2149845 in words is "two million, one hundred forty-nine thousand, eight hundred forty-five".