1968893 has 4 divisors (see below), whose sum is σ = 1972380. Its totient is φ = 1965408.

The previous prime is 1968871. The next prime is 1968899. The reversal of 1968893 is 3988691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3988691 = 7 ⋅569813.

It can be written as a sum of positive squares in 2 ways, for example, as 284089 + 1684804 = 533^2 + 1298^2 .

It is a cyclic number.

It is not a de Polignac number, because 1968893 - 2⁶ = 1968829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680 + ... + 2097.

It is an arithmetic number, because the mean of its divisors is an integer number (493095).

2^1968893 is an apocalyptic number.

It is an amenable number.

1968893 is a deficient number, since it is larger than the sum of its proper divisors (3487).

1968893 is an equidigital number, since it uses as much as digits as its factorization.

1968893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486.

The product of its digits is 93312, while the sum is 44.

The square root of 1968893 is about 1403.1724769251. The cubic root of 1968893 is about 125.3354828048.

The spelling of 1968893 in words is "one million, nine hundred sixty-eight thousand, eight hundred ninety-three".