19299145824 has 144 divisors (see below), whose sum is σ = 66411884448. Its totient is φ = 5189677056.

The previous prime is 19299145771. The next prime is 19299145829. The reversal of 19299145824 is 42854199291.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19299145829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247287 + ... + 315830.

It is an arithmetic number, because the mean of its divisors is an integer number (461193642).

Almost surely, 2^19299145824 is an apocalyptic number.

19299145824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19299145824 is an abundant number, since it is smaller than the sum of its proper divisors (47112738624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19299145824 is a wasteful number, since it uses less digits than its factorization.

19299145824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563157 (or 563146 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 19299145824 in words is "nineteen billion, two hundred ninety-nine million, one hundred forty-five thousand, eight hundred twenty-four".