11493667789 has 2 divisors, whose sum is σ = 11493667790. Its totient is φ = 11493667788.

The previous prime is 11493667747. The next prime is 11493667813. The reversal of 11493667789 is 98776639411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9262522564 + 2231145225 = 96242^2 + 47235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11493667789 is a prime.

It is a super-2 number, since 2×11493667789² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11493667189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5746833894 + 5746833895.

It is an arithmetic number, because the mean of its divisors is an integer number (5746833895).

Almost surely, 2^11493667789 is an apocalyptic number.

It is an amenable number.

11493667789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11493667789 is an equidigital number, since it uses as much as digits as its factorization.

11493667789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 61.

The spelling of 11493667789 in words is "eleven billion, four hundred ninety-three million, six hundred sixty-seven thousand, seven hundred eighty-nine".