1938885 has 32 divisors (see below), whose sum is σ = 3416448. Its totient is φ = 933120.

The previous prime is 1938883. The next prime is 1938887. The reversal of 1938885 is 5888391.

It is an interprime number because it is at equal distance from previous prime (1938883) and next prime (1938887).

It is not a de Polignac number, because 1938885 - 2¹ = 1938883 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11814 + ... + 11976.

It is an arithmetic number, because the mean of its divisors is an integer number (106764).

2^1938885 is an apocalyptic number.

1938885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1938885 is a deficient number, since it is larger than the sum of its proper divisors (1477563).

1938885 is a wasteful number, since it uses less digits than its factorization.

1938885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 69120, while the sum is 42.

The square root of 1938885 is about 1392.4385085166. The cubic root of 1938885 is about 124.6954720376.

The spelling of 1938885 in words is "one million, nine hundred thirty-eight thousand, eight hundred eighty-five".