19373728469 has 2 divisors, whose sum is σ = 19373728470. Its totient is φ = 19373728468.

The previous prime is 19373728463. The next prime is 19373728489. The reversal of 19373728469 is 96482737391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16177296100 + 3196432369 = 127190^2 + 56537^2 .

It is a cyclic number.

It is not a de Polignac number, because 19373728469 - 2²⁸ = 19105293013 is a prime.

It is a super-2 number, since 2×19373728469² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19373728463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9686864234 + 9686864235.

It is an arithmetic number, because the mean of its divisors is an integer number (9686864235).

Almost surely, 2^19373728469 is an apocalyptic number.

It is an amenable number.

19373728469 is a deficient number, since it is larger than the sum of its proper divisors (1).

19373728469 is an equidigital number, since it uses as much as digits as its factorization.

19373728469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 59.

The spelling of 19373728469 in words is "nineteen billion, three hundred seventy-three million, seven hundred twenty-eight thousand, four hundred sixty-nine".