1945841 has 4 divisors (see below), whose sum is σ = 1949184. Its totient is φ = 1942500.

The previous prime is 1945831. The next prime is 1945843. The reversal of 1945841 is 1485491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1945841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1945798 and 1945807.

It is not an unprimeable number, because it can be changed into a prime (1945843) 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, 545 + ... + 2046.

It is an arithmetic number, because the mean of its divisors is an integer number (487296).

2^1945841 is an apocalyptic number.

It is an amenable number.

1945841 is a deficient number, since it is larger than the sum of its proper divisors (3343).

1945841 is an equidigital number, since it uses as much as digits as its factorization.

1945841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

The product of its digits is 5760, while the sum is 32.

The square root of 1945841 is about 1394.9340486202. The cubic root of 1945841 is about 124.8444144254.

The spelling of 1945841 in words is "one million, nine hundred forty-five thousand, eight hundred forty-one".