19622890172 has 24 divisors (see below), whose sum is σ = 34458730992. Its totient is φ = 9777574400.

The previous prime is 19622890153. The next prime is 19622890187. The reversal of 19622890172 is 27109822691.

It is a congruent number.

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, 3019847 + ... + 3026337.

It is an arithmetic number, because the mean of its divisors is an integer number (1435780458).

Almost surely, 2^19622890172 is an apocalyptic number.

It is an amenable number.

19622890172 is a deficient number, since it is larger than the sum of its proper divisors (14835840820).

19622890172 is a wasteful number, since it uses less digits than its factorization.

19622890172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989 (or 8987 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 19622890172 in words is "nineteen billion, six hundred twenty-two million, eight hundred ninety thousand, one hundred seventy-two".