1838369 has 4 divisors (see below), whose sum is σ = 1979796. Its totient is φ = 1696944.

The previous prime is 1838341. The next prime is 1838371. The reversal of 1838369 is 9638381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9638381 = 229 ⋅42089.

It can be written as a sum of positive squares in 2 ways, for example, as 877969 + 960400 = 937^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1838369 - 2²⁰ = 789793 is a prime.

It is a super-2 number, since 2×1838369² = 6759201160322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1838069) 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, 70694 + ... + 70719.

It is an arithmetic number, because the mean of its divisors is an integer number (494949).

2^1838369 is an apocalyptic number.

It is an amenable number.

1838369 is a deficient number, since it is larger than the sum of its proper divisors (141427).

1838369 is a wasteful number, since it uses less digits than its factorization.

1838369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141426.

The product of its digits is 31104, while the sum is 38.

The square root of 1838369 is about 1355.8646687631. The cubic root of 1838369 is about 122.5022962224.

The spelling of 1838369 in words is "one million, eight hundred thirty-eight thousand, three hundred sixty-nine".