19369186469 has 2 divisors, whose sum is σ = 19369186470. Its totient is φ = 19369186468.

The previous prime is 19369186427. The next prime is 19369186493. The reversal of 19369186469 is 96468196391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16942146244 + 2427040225 = 130162^2 + 49265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19369186469 is a prime.

It is a super-2 number, since 2×19369186469² (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 (19369186769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9684593234 + 9684593235.

It is an arithmetic number, because the mean of its divisors is an integer number (9684593235).

Almost surely, 2^19369186469 is an apocalyptic number.

It is an amenable number.

19369186469 is a deficient number, since it is larger than the sum of its proper divisors (1).

19369186469 is an equidigital number, since it uses as much as digits as its factorization.

19369186469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 62.

The spelling of 19369186469 in words is "nineteen billion, three hundred sixty-nine million, one hundred eighty-six thousand, four hundred sixty-nine".