19789413 has 16 divisors (see below), whose sum is σ = 30971520. Its totient is φ = 11002176.

The previous prime is 19789409. The next prime is 19789423. The reversal of 19789413 is 31498791.

It is a happy number.

It is not a de Polignac number, because 19789413 - 2² = 19789409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19789403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11958 + ... + 13511.

It is an arithmetic number, because the mean of its divisors is an integer number (1935720).

Almost surely, 2^19789413 is an apocalyptic number.

It is an amenable number.

19789413 is a deficient number, since it is larger than the sum of its proper divisors (11182107).

19789413 is a wasteful number, since it uses less digits than its factorization.

19789413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25516.

The product of its digits is 54432, while the sum is 42.

The square root of 19789413 is about 4448.5293075352. The cubic root of 19789413 is about 270.4856964134.

It can be divided in two parts, 19789 and 413, that added together give a palindrome (20202).

The spelling of 19789413 in words is "nineteen million, seven hundred eighty-nine thousand, four hundred thirteen".