13581739489 has 2 divisors, whose sum is σ = 13581739490. Its totient is φ = 13581739488.

The previous prime is 13581739477. The next prime is 13581739511. The reversal of 13581739489 is 98493718531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10693214464 + 2888525025 = 103408^2 + 53745^2 .

It is a cyclic number.

It is not a de Polignac number, because 13581739489 - 2²¹ = 13579642337 is a prime.

It is a super-2 number, since 2×13581739489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13581739439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6790869744 + 6790869745.

It is an arithmetic number, because the mean of its divisors is an integer number (6790869745).

Almost surely, 2^13581739489 is an apocalyptic number.

It is an amenable number.

13581739489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13581739489 is an equidigital number, since it uses as much as digits as its factorization.

13581739489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 58.

The spelling of 13581739489 in words is "thirteen billion, five hundred eighty-one million, seven hundred thirty-nine thousand, four hundred eighty-nine".