19172453308 has 12 divisors (see below), whose sum is σ = 33553393272. Its totient is φ = 9585769520.

The previous prime is 19172453297. The next prime is 19172453327. The reversal of 19172453308 is 80335427191.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9178 + ... + 196033.

It is an arithmetic number, because the mean of its divisors is an integer number (2796116106).

Almost surely, 2^19172453308 is an apocalyptic number.

It is an amenable number.

19172453308 is a deficient number, since it is larger than the sum of its proper divisors (14380939964).

19172453308 is a wasteful number, since it uses less digits than its factorization.

19172453308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228572 (or 228570 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 19172453308 in words is "nineteen billion, one hundred seventy-two million, four hundred fifty-three thousand, three hundred eight".