2018704889 has 2 divisors, whose sum is σ = 2018704890. Its totient is φ = 2018704888.

The previous prime is 2018704879. The next prime is 2018704921. The reversal of 2018704889 is 9884078102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1965414889 + 53290000 = 44333^2 + 7300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018704889 - 2¹² = 2018700793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2018704829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009352444 + 1009352445.

It is an arithmetic number, because the mean of its divisors is an integer number (1009352445).

Almost surely, 2^2018704889 is an apocalyptic number.

It is an amenable number.

2018704889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018704889 is an equidigital number, since it uses as much as digits as its factorization.

2018704889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 2018704889 is about 44929.9998775874. Note that the first 3 decimals coincide. The cubic root of 2018704889 is about 1263.8366489036.

The spelling of 2018704889 in words is "two billion, eighteen million, seven hundred four thousand, eight hundred eighty-nine".