1938393 has 12 divisors (see below), whose sum is σ = 2876068. Its totient is φ = 1257120.

The previous prime is 1938383. The next prime is 1938427. The reversal of 1938393 is 3938391.

It can be written as a sum of positive squares in 2 ways, for example, as 1710864 + 227529 = 1308^2 + 477^2 .

It is not a de Polignac number, because 1938393 - 2¹² = 1934297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1938373) 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 11 ways as a sum of consecutive naturals, for example, 2578 + ... + 3243.

2^1938393 is an apocalyptic number.

It is an amenable number.

1938393 is a deficient number, since it is larger than the sum of its proper divisors (937675).

1938393 is a wasteful number, since it uses less digits than its factorization.

1938393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864 (or 5861 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 1938393 is about 1392.2618288239. The cubic root of 1938393 is about 124.6849238166.

The spelling of 1938393 in words is "one million, nine hundred thirty-eight thousand, three hundred ninety-three".