2098387789 has 2 divisors, whose sum is σ = 2098387790. Its totient is φ = 2098387788.

The previous prime is 2098387787. The next prime is 2098387813. The reversal of 2098387789 is 9877838902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1926332100 + 172055689 = 43890^2 + 13117^2 .

It is a cyclic number.

It is not a de Polignac number, because 2098387789 - 2¹ = 2098387787 is a prime.

Together with 2098387787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2098387787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049193894 + 1049193895.

It is an arithmetic number, because the mean of its divisors is an integer number (1049193895).

Almost surely, 2^2098387789 is an apocalyptic number.

It is an amenable number.

2098387789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2098387789 is an equidigital number, since it uses as much as digits as its factorization.

2098387789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The square root of 2098387789 is about 45808.1629079360. The cubic root of 2098387789 is about 1280.2513725467.

The spelling of 2098387789 in words is "two billion, ninety-eight million, three hundred eighty-seven thousand, seven hundred eighty-nine".