1838903089 has 4 divisors (see below), whose sum is σ = 1839165040. Its totient is φ = 1838641140.

The previous prime is 1838903051. The next prime is 1838903111. The reversal of 1838903089 is 9803098381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9803098381 = 41777 ⋅234653.

It is a cyclic number.

It is not a de Polignac number, because 1838903089 - 2²¹ = 1836805937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1838903009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120147 + ... + 134584.

It is an arithmetic number, because the mean of its divisors is an integer number (459791260).

Almost surely, 2^1838903089 is an apocalyptic number.

It is an amenable number.

1838903089 is a deficient number, since it is larger than the sum of its proper divisors (261951).

1838903089 is an equidigital number, since it uses as much as digits as its factorization.

1838903089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261950.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1838903089 is about 42882.4333381398. The cubic root of 1838903089 is about 1225.1415833022.

The spelling of 1838903089 in words is "one billion, eight hundred thirty-eight million, nine hundred three thousand, eighty-nine".