19393638226 has 16 divisors (see below), whose sum is σ = 30371102784. Its totient is φ = 9270377424.

The previous prime is 19393638197. The next prime is 19393638227. The reversal of 19393638226 is 62283639391.

It is a super-2 number, since 2×19393638226² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19393638227) 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 7 ways as a sum of consecutive naturals, for example, 20136 + ... + 197971.

It is an arithmetic number, because the mean of its divisors is an integer number (1898193924).

Almost surely, 2^19393638226 is an apocalyptic number.

19393638226 is a deficient number, since it is larger than the sum of its proper divisors (10977464558).

19393638226 is a wasteful number, since it uses less digits than its factorization.

19393638226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220065.

The product of its digits is 2519424, while the sum is 52.

The spelling of 19393638226 in words is "nineteen billion, three hundred ninety-three million, six hundred thirty-eight thousand, two hundred twenty-six".