1838218383 has 6 divisors (see below), whose sum is σ = 2655204344. Its totient is φ = 1225478916.

The previous prime is 1838218367. The next prime is 1838218391. The reversal of 1838218383 is 3838128381.

1838218383 is a `hidden beast` number, since 18 + 382 + 183 + 83 = 666.

It is not a de Polignac number, because 1838218383 - 2⁴ = 1838218367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838210383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102123235 + ... + 102123252.

Almost surely, 2^1838218383 is an apocalyptic number.

1838218383 is a deficient number, since it is larger than the sum of its proper divisors (816985961).

1838218383 is a wasteful number, since it uses less digits than its factorization.

1838218383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204246493 (or 204246490 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 1838218383 is about 42874.4490693467. The cubic root of 1838218383 is about 1224.9895060603.

The spelling of 1838218383 in words is "one billion, eight hundred thirty-eight million, two hundred eighteen thousand, three hundred eighty-three".