19299157321 has 4 divisors (see below), whose sum is σ = 19300855312. Its totient is φ = 19297459332.

The previous prime is 19299157309. The next prime is 19299157351. The reversal of 19299157321 is 12375199291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19299157321 - 2⁵ = 19299157289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19299157351) 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 3 ways as a sum of consecutive naturals, for example, 831831 + ... + 854716.

It is an arithmetic number, because the mean of its divisors is an integer number (4825213828).

Almost surely, 2^19299157321 is an apocalyptic number.

It is an amenable number.

19299157321 is a deficient number, since it is larger than the sum of its proper divisors (1697991).

19299157321 is a wasteful number, since it uses less digits than its factorization.

19299157321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697990.

The product of its digits is 306180, while the sum is 49.

The spelling of 19299157321 in words is "nineteen billion, two hundred ninety-nine million, one hundred fifty-seven thousand, three hundred twenty-one".