1938825 has 36 divisors (see below), whose sum is σ = 3971968. Its totient is φ = 885600.

The previous prime is 1938821. The next prime is 1938829. The reversal of 1938825 is 5288391.

It is an interprime number because it is at equal distance from previous prime (1938821) and next prime (1938829).

It is not a de Polignac number, because 1938825 - 2² = 1938821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1938825.

It is not an unprimeable number, because it can be changed into a prime (1938821) 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 35 ways as a sum of consecutive naturals, for example, 960 + ... + 2190.

2^1938825 is an apocalyptic number.

1938825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1938825 is an abundant number, since it is smaller than the sum of its proper divisors (2033143).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1938825 is a wasteful number, since it uses less digits than its factorization.

1938825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1246 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1938825 is about 1392.4169634129. The cubic root of 1938825 is about 124.6941857647.

The spelling of 1938825 in words is "one million, nine hundred thirty-eight thousand, eight hundred twenty-five".