1968943 has 4 divisors (see below), whose sum is σ = 2017008. Its totient is φ = 1920880.

The previous prime is 1968919. The next prime is 1968977. The reversal of 1968943 is 3498691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968943 is a prime.

It is a Duffinian number.

1968943 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1968896 and 1968905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968983) 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, 23971 + ... + 24052.

It is an arithmetic number, because the mean of its divisors is an integer number (504252).

2^1968943 is an apocalyptic number.

1968943 is a deficient number, since it is larger than the sum of its proper divisors (48065).

1968943 is an equidigital number, since it uses as much as digits as its factorization.

1968943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48064.

The product of its digits is 46656, while the sum is 40.

The square root of 1968943 is about 1403.1902935810. The cubic root of 1968943 is about 125.3365437599.

The spelling of 1968943 in words is "one million, nine hundred sixty-eight thousand, nine hundred forty-three".