1968089 has 4 divisors (see below), whose sum is σ = 1971840. Its totient is φ = 1964340.

The previous prime is 1968079. The next prime is 1968103. The reversal of 1968089 is 9808691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968019) 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, 929 + ... + 2190.

It is an arithmetic number, because the mean of its divisors is an integer number (492960).

2^1968089 is an apocalyptic number.

It is an amenable number.

1968089 is a deficient number, since it is larger than the sum of its proper divisors (3751).

1968089 is an equidigital number, since it uses as much as digits as its factorization.

1968089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1968089 is about 1402.8859540248. The cubic root of 1968089 is about 125.3184201800.

The spelling of 1968089 in words is "one million, nine hundred sixty-eight thousand, eighty-nine".