19216787033 has 2 divisors, whose sum is σ = 19216787034. Its totient is φ = 19216787032.

The previous prime is 19216787021. The next prime is 19216787047. The reversal of 19216787033 is 33078761291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18521304649 + 695482384 = 136093^2 + 26372^2 .

It is a cyclic number.

It is not a de Polignac number, because 19216787033 - 2²⁰ = 19215738457 is a prime.

It is not a weakly prime, because it can be changed into another prime (19216787053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9608393516 + 9608393517.

It is an arithmetic number, because the mean of its divisors is an integer number (9608393517).

Almost surely, 2^19216787033 is an apocalyptic number.

It is an amenable number.

19216787033 is a deficient number, since it is larger than the sum of its proper divisors (1).

19216787033 is an equidigital number, since it uses as much as digits as its factorization.

19216787033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 19216787033 in words is "nineteen billion, two hundred sixteen million, seven hundred eighty-seven thousand, thirty-three".