1945441 has 4 divisors (see below), whose sum is σ = 1950484. Its totient is φ = 1940400.

The previous prime is 1945439. The next prime is 1945453. The reversal of 1945441 is 1445491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1445491 = 457 ⋅3163.

It can be written as a sum of positive squares in 2 ways, for example, as 245025 + 1700416 = 495^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1945441 - 2¹ = 1945439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1942441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890 + ... + 2731.

It is an arithmetic number, because the mean of its divisors is an integer number (487621).

2^1945441 is an apocalyptic number.

It is an amenable number.

1945441 is a deficient number, since it is larger than the sum of its proper divisors (5043).

1945441 is an equidigital number, since it uses as much as digits as its factorization.

1945441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042.

The product of its digits is 2880, while the sum is 28.

The square root of 1945441 is about 1394.7906652971. The cubic root of 1945441 is about 124.8358592235.

The spelling of 1945441 in words is "one million, nine hundred forty-five thousand, four hundred forty-one".