2145894 has 8 divisors (see below), whose sum is σ = 4291800. Its totient is φ = 715296.

The previous prime is 2145853. The next prime is 2145937. The reversal of 2145894 is 4985412.

2145894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2145894 is an admirable number.

It is a super-2 number, since 2×2145894² = 9209722118472, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

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 3 ways as a sum of consecutive naturals, for example, 178819 + ... + 178830.

It is an arithmetic number, because the mean of its divisors is an integer number (536475).

2^2145894 is an apocalyptic number.

2145894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145894 is a wasteful number, since it uses less digits than its factorization.

2145894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357654.

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

The square root of 2145894 is about 1464.8870263607. The cubic root of 2145894 is about 128.9840735100.

The spelling of 2145894 in words is "two million, one hundred forty-five thousand, eight hundred ninety-four".