1944905 has 8 divisors (see below), whose sum is σ = 2397192. Its totient is φ = 1513728.

The previous prime is 1944883. The next prime is 1944911. The reversal of 1944905 is 5094491.

It can be written as a sum of positive squares in 4 ways, for example, as 51529 + 1893376 = 227^2 + 1376^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1944905 - 2⁶ = 1944841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5072 + ... + 5441.

It is an arithmetic number, because the mean of its divisors is an integer number (299649).

2^1944905 is an apocalyptic number.

It is an amenable number.

1944905 is a deficient number, since it is larger than the sum of its proper divisors (452287).

1944905 is a wasteful number, since it uses less digits than its factorization.

1944905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1944905 is about 1394.5985085321. The cubic root of 1944905 is about 124.8243934141.

The spelling of 1944905 in words is "one million, nine hundred forty-four thousand, nine hundred five".