19497326914519 has 4 divisors (see below), whose sum is σ = 20644228497744. Its totient is φ = 18350425331296.

The previous prime is 19497326914517. The next prime is 19497326914567. The reversal of 19497326914519 is 91541962379491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19497326914519 - 2¹ = 19497326914517 is a prime.

It is a super-2 number, since 2×19497326914519² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19497326914511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573450791587 + ... + 573450791620.

It is an arithmetic number, because the mean of its divisors is an integer number (5161057124436).

Almost surely, 2^{19497326914519} is an apocalyptic number.

19497326914519 is a deficient number, since it is larger than the sum of its proper divisors (1146901583225).

19497326914519 is a wasteful number, since it uses less digits than its factorization.

19497326914519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146901583224.

The product of its digits is 132269760, while the sum is 70.

The spelling of 19497326914519 in words is "nineteen trillion, four hundred ninety-seven billion, three hundred twenty-six million, nine hundred fourteen thousand, five hundred nineteen".