13019789 has 2 divisors, whose sum is σ = 13019790. Its totient is φ = 13019788.

The previous prime is 13019761. The next prime is 13019791. The reversal of 13019789 is 98791031.

13019789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9815689 + 3204100 = 3133^2 + 1790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13019789 is a prime.

Together with 13019791, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13019729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6509894 + 6509895.

It is an arithmetic number, because the mean of its divisors is an integer number (6509895).

Almost surely, 2^13019789 is an apocalyptic number.

It is an amenable number.

13019789 is a deficient number, since it is larger than the sum of its proper divisors (1).

13019789 is an equidigital number, since it uses as much as digits as its factorization.

13019789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 13019789 is about 3608.2944724620. The cubic root of 13019789 is about 235.2527174182.

The spelling of 13019789 in words is "thirteen million, nineteen thousand, seven hundred eighty-nine".