19649118242 has 32 divisors (see below), whose sum is σ = 33435232320. Its totient is φ = 8585403840.

The previous prime is 19649118193. The next prime is 19649118253. The reversal of 19649118242 is 24281194691.

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 in 15 ways as a sum of consecutive naturals, for example, 719192 + ... + 746012.

It is an arithmetic number, because the mean of its divisors is an integer number (1044851010).

Almost surely, 2^19649118242 is an apocalyptic number.

19649118242 is a deficient number, since it is larger than the sum of its proper divisors (13786114078).

19649118242 is a wasteful number, since it uses less digits than its factorization.

19649118242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338.

The product of its digits is 248832, while the sum is 47.

The spelling of 19649118242 in words is "nineteen billion, six hundred forty-nine million, one hundred eighteen thousand, two hundred forty-two".