1838502005 has 4 divisors (see below), whose sum is σ = 2206202412. Its totient is φ = 1470801600.

The previous prime is 1838501963. The next prime is 1838502011. The reversal of 1838502005 is 5002058381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5002058381 = 5279 ⋅947539.

It can be written as a sum of positive squares in 2 ways, for example, as 607474609 + 1231027396 = 24647^2 + 35086^2 .

It is not a de Polignac number, because 1838502005 - 2¹⁰ = 1838500981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183850196 + ... + 183850205.

It is an arithmetic number, because the mean of its divisors is an integer number (551550603).

Almost surely, 2^1838502005 is an apocalyptic number.

It is an amenable number.

1838502005 is a deficient number, since it is larger than the sum of its proper divisors (367700407).

1838502005 is an equidigital number, since it uses as much as digits as its factorization.

1838502005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367700406.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 1838502005 is about 42877.7565294641. The cubic root of 1838502005 is about 1225.0525047605.

The spelling of 1838502005 in words is "one billion, eight hundred thirty-eight million, five hundred two thousand, five".