19789055 has 24 divisors (see below), whose sum is σ = 28064880. Its totient is φ = 13278720.

The previous prime is 19789027. The next prime is 19789069. The reversal of 19789055 is 55098791.

It is a happy number.

It is not a de Polignac number, because 19789055 - 2¹⁰ = 19788031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19788997 and 19789015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8231 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (1169370).

Almost surely, 2^19789055 is an apocalyptic number.

19789055 is a deficient number, since it is larger than the sum of its proper divisors (8275825).

19789055 is a wasteful number, since it uses less digits than its factorization.

19789055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 19789055 is about 4448.4890693358. The cubic root of 19789055 is about 270.4840653314.

The spelling of 19789055 in words is "nineteen million, seven hundred eighty-nine thousand, fifty-five".