1965893 has 2 divisors, whose sum is σ = 1965894. Its totient is φ = 1965892.

The previous prime is 1965889. The next prime is 1965913. The reversal of 1965893 is 3985691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1965604 + 289 = 1402^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 1965893 - 2² = 1965889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1965893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1965853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982946 + 982947.

It is an arithmetic number, because the mean of its divisors is an integer number (982947).

2^1965893 is an apocalyptic number.

It is an amenable number.

1965893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1965893 is an equidigital number, since it uses as much as digits as its factorization.

1965893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 41.

The square root of 1965893 is about 1402.1030632589. The cubic root of 1965893 is about 125.2717926019.

The spelling of 1965893 in words is "one million, nine hundred sixty-five thousand, eight hundred ninety-three".