1938115 has 4 divisors (see below), whose sum is σ = 2325744. Its totient is φ = 1550488.

The previous prime is 1938113. The next prime is 1938149. The reversal of 1938115 is 5118391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5118391 = 19 ⋅269389.

It is a cyclic number.

It is not a de Polignac number, because 1938115 - 2¹ = 1938113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193807 + ... + 193816.

It is an arithmetic number, because the mean of its divisors is an integer number (581436).

2^1938115 is an apocalyptic number.

1938115 is a deficient number, since it is larger than the sum of its proper divisors (387629).

1938115 is an equidigital number, since it uses as much as digits as its factorization.

1938115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387628.

The product of its digits is 1080, while the sum is 28.

The square root of 1938115 is about 1392.1619877011. The cubic root of 1938115 is about 124.6789628537.

The spelling of 1938115 in words is "one million, nine hundred thirty-eight thousand, one hundred fifteen".