19338913 has 8 divisors (see below), whose sum is σ = 21168576. Its totient is φ = 17521200.

The previous prime is 19338881. The next prime is 19338919. The reversal of 19338913 is 31983391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19338913 - 2⁵ = 19338881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19338919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595 + ... + 6247.

It is an arithmetic number, because the mean of its divisors is an integer number (2646072).

Almost surely, 2^19338913 is an apocalyptic number.

It is an amenable number.

19338913 is a deficient number, since it is larger than the sum of its proper divisors (1829663).

19338913 is a wasteful number, since it uses less digits than its factorization.

19338913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975.

The product of its digits is 17496, while the sum is 37.

The square root of 19338913 is about 4397.6030971428. The cubic root of 19338913 is about 268.4174131365.

The spelling of 19338913 in words is "nineteen million, three hundred thirty-eight thousand, nine hundred thirteen".