19321371248 has 20 divisors (see below), whose sum is σ = 37508719080. Its totient is φ = 9641701824.

The previous prime is 19321371247. The next prime is 19321371253. The reversal of 19321371248 is 84217312391.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19321371247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178090 + ... + 1194377.

It is an arithmetic number, because the mean of its divisors is an integer number (1875435954).

Almost surely, 2^19321371248 is an apocalyptic number.

It is an amenable number.

19321371248 is a deficient number, since it is larger than the sum of its proper divisors (18187347832).

19321371248 is a wasteful number, since it uses less digits than its factorization.

19321371248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372984 (or 2372978 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The spelling of 19321371248 in words is "nineteen billion, three hundred twenty-one million, three hundred seventy-one thousand, two hundred forty-eight".