19408326508 has 12 divisors (see below), whose sum is σ = 34167953232. Its totient is φ = 9646054160.

The previous prime is 19408326491. The next prime is 19408326523. The reversal of 19408326508 is 80562380491.

It is a super-2 number, since 2×19408326508² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 14526523 + ... + 14527858.

It is an arithmetic number, because the mean of its divisors is an integer number (2847329436).

Almost surely, 2^19408326508 is an apocalyptic number.

It is an amenable number.

19408326508 is a deficient number, since it is larger than the sum of its proper divisors (14759626724).

19408326508 is a wasteful number, since it uses less digits than its factorization.

19408326508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29054552 (or 29054550 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 19408326508 in words is "nineteen billion, four hundred eight million, three hundred twenty-six thousand, five hundred eight".