19436864495 has 36 divisors (see below), whose sum is σ = 24621325176. Its totient is φ = 14728971840.

The previous prime is 19436864483. The next prime is 19436864497. The reversal of 19436864495 is 59446863491.

It is not a de Polignac number, because 19436864495 - 2¹⁴ = 19436848111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19436864497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 58721480 + ... + 58721810.

Almost surely, 2^19436864495 is an apocalyptic number.

19436864495 is a deficient number, since it is larger than the sum of its proper divisors (5184460681).

19436864495 is an equidigital number, since it uses as much as digits as its factorization.

19436864495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 508 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 59.

The spelling of 19436864495 in words is "nineteen billion, four hundred thirty-six million, eight hundred sixty-four thousand, four hundred ninety-five".