2385587989 has 2 divisors, whose sum is σ = 2385587990. Its totient is φ = 2385587988.

The previous prime is 2385587969. The next prime is 2385588089. The reversal of 2385587989 is 9897855832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2066429764 + 319158225 = 45458^2 + 17865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2385587989 - 2⁵ = 2385587957 is a prime.

It is a super-2 number, since 2×2385587989² = 11382060106522128242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2385587989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2385587969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1192793994 + 1192793995.

It is an arithmetic number, because the mean of its divisors is an integer number (1192793995).

Almost surely, 2^2385587989 is an apocalyptic number.

It is an amenable number.

2385587989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2385587989 is an equidigital number, since it uses as much as digits as its factorization.

2385587989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43545600, while the sum is 64.

The square root of 2385587989 is about 48842.4813968332. The cubic root of 2385587989 is about 1336.1805525059.

The spelling of 2385587989 in words is "two billion, three hundred eighty-five million, five hundred eighty-seven thousand, nine hundred eighty-nine".