1938105 has 24 divisors (see below), whose sum is σ = 3618888. Its totient is φ = 953856.

The previous prime is 1938103. The next prime is 1938113. The reversal of 1938105 is 5018391.

It can be written as a sum of positive squares in 4 ways, for example, as 266256 + 1671849 = 516^2 + 1293^2 .

It is not a de Polignac number, because 1938105 - 2¹ = 1938103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1072 + ... + 2241.

It is an arithmetic number, because the mean of its divisors is an integer number (150787).

2^1938105 is an apocalyptic number.

1938105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1938105 is a deficient number, since it is larger than the sum of its proper divisors (1680783).

1938105 is a wasteful number, since it uses less digits than its factorization.

1938105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337 (or 3334 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1938105 is about 1392.1583961604. The cubic root of 1938105 is about 124.6787484200.

The spelling of 1938105 in words is "one million, nine hundred thirty-eight thousand, one hundred five".