1968459 has 4 divisors (see below), whose sum is σ = 2624616. Its totient is φ = 1312304.

The previous prime is 1968427. The next prime is 1968467. The reversal of 1968459 is 9548691.

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

It is a cyclic number.

It is not a de Polignac number, because 1968459 - 2⁵ = 1968427 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1968459.

It is not an unprimeable number, because it can be changed into a prime (1968059) 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, 328074 + ... + 328079.

It is an arithmetic number, because the mean of its divisors is an integer number (656154).

2^1968459 is an apocalyptic number.

1968459 is a deficient number, since it is larger than the sum of its proper divisors (656157).

1968459 is an equidigital number, since it uses as much as digits as its factorization.

1968459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656156.

The product of its digits is 77760, while the sum is 42.

The square root of 1968459 is about 1403.0178188462. The cubic root of 1968459 is about 125.3262729600.

The spelling of 1968459 in words is "one million, nine hundred sixty-eight thousand, four hundred fifty-nine".