18739714789 has 2 divisors, whose sum is σ = 18739714790. Its totient is φ = 18739714788.

The previous prime is 18739714783. The next prime is 18739714841. The reversal of 18739714789 is 98741793781.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12156826564 + 6582888225 = 110258^2 + 81135^2 .

It is a cyclic number.

It is not a de Polignac number, because 18739714789 - 2⁵ = 18739714757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18739714789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18739714783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9369857394 + 9369857395.

It is an arithmetic number, because the mean of its divisors is an integer number (9369857395).

Almost surely, 2^18739714789 is an apocalyptic number.

It is an amenable number.

18739714789 is a deficient number, since it is larger than the sum of its proper divisors (1).

18739714789 is an equidigital number, since it uses as much as digits as its factorization.

18739714789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21337344, while the sum is 64.

The spelling of 18739714789 in words is "eighteen billion, seven hundred thirty-nine million, seven hundred fourteen thousand, seven hundred eighty-nine".