19328869 has 4 divisors (see below), whose sum is σ = 22090144. Its totient is φ = 16567596.

The previous prime is 19328863. The next prime is 19328879. The reversal of 19328869 is 96882391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19328869 - 2⁹ = 19328357 is a prime.

It is a super-2 number, since 2×19328869² = 747210353638322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19328863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380627 + ... + 1380640.

It is an arithmetic number, because the mean of its divisors is an integer number (5522536).

Almost surely, 2^19328869 is an apocalyptic number.

It is an amenable number.

19328869 is a deficient number, since it is larger than the sum of its proper divisors (2761275).

19328869 is an equidigital number, since it uses as much as digits as its factorization.

19328869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761274.

The product of its digits is 186624, while the sum is 46.

The square root of 19328869 is about 4396.4609630929. The cubic root of 19328869 is about 268.3709360092.

It can be divided in two parts, 1932 and 8869, that added together give a palindrome (10801).

The spelling of 19328869 in words is "nineteen million, three hundred twenty-eight thousand, eight hundred sixty-nine".