1965841 has 4 divisors (see below), whose sum is σ = 1976884. Its totient is φ = 1954800.

The previous prime is 1965781. The next prime is 1965851. The reversal of 1965841 is 1485691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1485691 = 157 ⋅9463.

It can be written as a sum of positive squares in 2 ways, for example, as 286225 + 1679616 = 535^2 + 1296^2 .

It is not a de Polignac number, because 1965841 - 2¹⁹ = 1441553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1965797 and 1965806.

It is not an unprimeable number, because it can be changed into a prime (1965851) 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, 5250 + ... + 5611.

It is an arithmetic number, because the mean of its divisors is an integer number (494221).

2^1965841 is an apocalyptic number.

It is an amenable number.

1965841 is a deficient number, since it is larger than the sum of its proper divisors (11043).

1965841 is a wasteful number, since it uses less digits than its factorization.

1965841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11042.

The product of its digits is 8640, while the sum is 34.

The square root of 1965841 is about 1402.0845195636. The cubic root of 1965841 is about 125.2706880673.

Subtracting from 1965841 its product of digits (8640), we obtain a square (1957201 = 1399²).

The spelling of 1965841 in words is "one million, nine hundred sixty-five thousand, eight hundred forty-one".