1903944 has 48 divisors (see below), whose sum is σ = 5540400. Its totient is φ = 543648.

The previous prime is 1903931. The next prime is 1903961. The reversal of 1903944 is 4493091.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367 + ... + 1985.

It is an arithmetic number, because the mean of its divisors is an integer number (115425).

2^1903944 is an apocalyptic number.

1903944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1903944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2770200).

1903944 is an abundant number, since it is smaller than the sum of its proper divisors (3636456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1903944 is a wasteful number, since it uses less digits than its factorization.

1903944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1903944 is about 1379.8347727174. The cubic root of 1903944 is about 123.9418735546.

The spelling of 1903944 in words is "one million, nine hundred three thousand, nine hundred forty-four".