1838340089 has 2 divisors, whose sum is σ = 1838340090. Its totient is φ = 1838340088.

The previous prime is 1838340011. The next prime is 1838340107. The reversal of 1838340089 is 9800438381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1515778489 + 322561600 = 38933^2 + 17960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1838340089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1838342089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919170044 + 919170045.

It is an arithmetic number, because the mean of its divisors is an integer number (919170045).

Almost surely, 2^1838340089 is an apocalyptic number.

It is an amenable number.

1838340089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838340089 is an equidigital number, since it uses as much as digits as its factorization.

1838340089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 1838340089 is about 42875.8683760457. The cubic root of 1838340089 is about 1225.0165404403.

The spelling of 1838340089 in words is "one billion, eight hundred thirty-eight million, three hundred forty thousand, eighty-nine".