19223356609 has 4 divisors (see below), whose sum is σ = 20235112240. Its totient is φ = 18211600980.

The previous prime is 19223356601. The next prime is 19223356613. The reversal of 19223356609 is 90665332291.

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 19223356609 - 2³ = 19223356601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19223356601) 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, 505877787 + ... + 505877824.

It is an arithmetic number, because the mean of its divisors is an integer number (5058778060).

Almost surely, 2^19223356609 is an apocalyptic number.

19223356609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19223356609 is a deficient number, since it is larger than the sum of its proper divisors (1011755631).

19223356609 is a wasteful number, since it uses less digits than its factorization.

19223356609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011755630.

The product of its (nonzero) digits is 524880, while the sum is 46.

It can be divided in two parts, 192233 and 56609, that added together give a palindrome (248842).

The spelling of 19223356609 in words is "nineteen billion, two hundred twenty-three million, three hundred fifty-six thousand, six hundred nine".