1838939 has 4 divisors (see below), whose sum is σ = 1855920. Its totient is φ = 1821960.

The previous prime is 1838933. The next prime is 1838957. The reversal of 1838939 is 9398381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1838939 - 2⁴ = 1838923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1838896 and 1838905.

It is not an unprimeable number, because it can be changed into a prime (1838933) 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, 8327 + ... + 8544.

It is an arithmetic number, because the mean of its divisors is an integer number (463980).

2^1838939 is an apocalyptic number.

1838939 is a deficient number, since it is larger than the sum of its proper divisors (16981).

1838939 is a wasteful number, since it uses less digits than its factorization.

1838939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980.

The product of its digits is 46656, while the sum is 41.

The square root of 1838939 is about 1356.0748504415. The cubic root of 1838939 is about 122.5149558305.

The spelling of 1838939 in words is "one million, eight hundred thirty-eight thousand, nine hundred thirty-nine".