1938413 has 4 divisors (see below), whose sum is σ = 1952700. Its totient is φ = 1924128.

The previous prime is 1938383. The next prime is 1938427. The reversal of 1938413 is 3148391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3148391 = 31 ⋅101561.

It can be written as a sum of positive squares in 2 ways, for example, as 1532644 + 405769 = 1238^2 + 637^2 .

It is a cyclic number.

It is not a de Polignac number, because 1938413 - 2¹⁰ = 1937389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938113) 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, 6938 + ... + 7211.

It is an arithmetic number, because the mean of its divisors is an integer number (488175).

2^1938413 is an apocalyptic number.

It is an amenable number.

1938413 is a deficient number, since it is larger than the sum of its proper divisors (14287).

1938413 is a wasteful number, since it uses less digits than its factorization.

1938413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14286.

The product of its digits is 2592, while the sum is 29.

The square root of 1938413 is about 1392.2690113624. The cubic root of 1938413 is about 124.6853526409.

The spelling of 1938413 in words is "one million, nine hundred thirty-eight thousand, four hundred thirteen".