1965923 has 2 divisors, whose sum is σ = 1965924. Its totient is φ = 1965922.

The previous prime is 1965913. The next prime is 1965937. The reversal of 1965923 is 3295691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1965923 - 2¹⁰ = 1964899 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1965913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982961 + 982962.

It is an arithmetic number, because the mean of its divisors is an integer number (982962).

2^1965923 is an apocalyptic number.

1965923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1965923 is an equidigital number, since it uses as much as digits as its factorization.

1965923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 35.

The square root of 1965923 is about 1402.1137614331. The cubic root of 1965923 is about 125.2724298246.

The spelling of 1965923 in words is "one million, nine hundred sixty-five thousand, nine hundred twenty-three".