13789898849 has 2 divisors, whose sum is σ = 13789898850. Its totient is φ = 13789898848.

The previous prime is 13789898833. The next prime is 13789898851. The reversal of 13789898849 is 94889898731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8825287249 + 4964611600 = 93943^2 + 70460^2 .

It is a cyclic number.

It is not a de Polignac number, because 13789898849 - 2⁴ = 13789898833 is a prime.

It is a super-2 number, since 2×13789898849² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 13789898851, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13789891849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894949424 + 6894949425.

It is an arithmetic number, because the mean of its divisors is an integer number (6894949425).

Almost surely, 2^13789898849 is an apocalyptic number.

It is an amenable number.

13789898849 is a deficient number, since it is larger than the sum of its proper divisors (1).

13789898849 is an equidigital number, since it uses as much as digits as its factorization.

13789898849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250822656, while the sum is 74.

The spelling of 13789898849 in words is "thirteen billion, seven hundred eighty-nine million, eight hundred ninety-eight thousand, eight hundred forty-nine".