1839816089 has 2 divisors, whose sum is σ = 1839816090. Its totient is φ = 1839816088.

The previous prime is 1839816071. The next prime is 1839816131. The reversal of 1839816089 is 9806189381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1821838489 + 17977600 = 42683^2 + 4240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1839816089 - 2⁸ = 1839815833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1839816089.

It is not a weakly prime, because it can be changed into another prime (1839816049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919908044 + 919908045.

It is an arithmetic number, because the mean of its divisors is an integer number (919908045).

Almost surely, 2^1839816089 is an apocalyptic number.

It is an amenable number.

1839816089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1839816089 is an equidigital number, since it uses as much as digits as its factorization.

1839816089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 1839816089 is about 42893.0774018372. The cubic root of 1839816089 is about 1225.3443072713.

The spelling of 1839816089 in words is "one billion, eight hundred thirty-nine million, eight hundred sixteen thousand, eighty-nine".