2091854 has 8 divisors (see below), whose sum is σ = 3153288. Its totient is φ = 1040760.

The previous prime is 2091851. The next prime is 2091863. The reversal of 2091854 is 4581902.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057 + ... + 2900.

It is an arithmetic number, because the mean of its divisors is an integer number (394161).

2^2091854 is an apocalyptic number.

2091854 is a deficient number, since it is larger than the sum of its proper divisors (1061434).

2091854 is a wasteful number, since it uses less digits than its factorization.

2091854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170.

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

The square root of 2091854 is about 1446.3243066477. The cubic root of 2091854 is about 127.8921210187.

The spelling of 2091854 in words is "two million, ninety-one thousand, eight hundred fifty-four".