19593978994 has 16 divisors (see below), whose sum is σ = 29589336000. Its totient is φ = 9731036304.

The previous prime is 19593978977. The next prime is 19593979049. The reversal of 19593978994 is 49987939591.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 191692 + ... + 275560.

It is an arithmetic number, because the mean of its divisors is an integer number (1849333500).

Almost surely, 2^19593978994 is an apocalyptic number.

19593978994 is a deficient number, since it is larger than the sum of its proper divisors (9995357006).

19593978994 is a wasteful number, since it uses less digits than its factorization.

19593978994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84657.

The product of its digits is 198404640, while the sum is 73.

The spelling of 19593978994 in words is "nineteen billion, five hundred ninety-three million, nine hundred seventy-eight thousand, nine hundred ninety-four".