1944857 has 4 divisors (see below), whose sum is σ = 2029440. Its totient is φ = 1860276.

The previous prime is 1944853. The next prime is 1944881. The reversal of 1944857 is 7584491.

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 not a de Polignac number, because 1944857 - 2² = 1944853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1944857.

It is not an unprimeable number, because it can be changed into a prime (1944853) 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, 42257 + ... + 42302.

It is an arithmetic number, because the mean of its divisors is an integer number (507360).

2^1944857 is an apocalyptic number.

It is an amenable number.

1944857 is a deficient number, since it is larger than the sum of its proper divisors (84583).

1944857 is an equidigital number, since it uses as much as digits as its factorization.

1944857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84582.

The product of its digits is 40320, while the sum is 38.

The square root of 1944857 is about 1394.5812991719. The cubic root of 1944857 is about 124.8233665225.

The spelling of 1944857 in words is "one million, nine hundred forty-four thousand, eight hundred fifty-seven".