2019854 has 4 divisors (see below), whose sum is σ = 3029784. Its totient is φ = 1009926.

The previous prime is 2019851. The next prime is 2019859. The reversal of 2019854 is 4589102.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019851) by changing a digit.

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 as a sum of consecutive naturals, namely, 504962 + ... + 504965.

It is an arithmetic number, because the mean of its divisors is an integer number (757446).

2^2019854 is an apocalyptic number.

2019854 is a deficient number, since it is larger than the sum of its proper divisors (1009930).

2019854 is a wasteful number, since it uses less digits than its factorization.

2019854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009929.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2019854 is about 1421.2156768063. The cubic root of 2019854 is about 126.4076408750.

The spelling of 2019854 in words is "two million, nineteen thousand, eight hundred fifty-four".