19835535968 has 12 divisors (see below), whose sum is σ = 39051211500. Its totient is φ = 9917767968.

The previous prime is 19835535949. The next prime is 19835535991. The reversal of 19835535968 is 86953553891.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19835535968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309930218 + ... + 309930281.

It is an arithmetic number, because the mean of its divisors is an integer number (3254267625).

Almost surely, 2^19835535968 is an apocalyptic number.

It is an amenable number.

19835535968 is a deficient number, since it is larger than the sum of its proper divisors (19215675532).

19835535968 is an equidigital number, since it uses as much as digits as its factorization.

19835535968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619860509 (or 619860501 counting only the distinct ones).

The product of its digits is 34992000, while the sum is 62.

The spelling of 19835535968 in words is "nineteen billion, eight hundred thirty-five million, five hundred thirty-five thousand, nine hundred sixty-eight".