19223267904 has 189 divisors, whose sum is σ = 56679214683. Its totient is φ = 6229177344.

The previous prime is 19223267891. The next prime is 19223267909. The reversal of 19223267904 is 40976232291.

The square root of 19223267904 is 138648.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3359361600 + 15863906304 = 57960^2 + 125952^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19223267904.

It is not an unprimeable number, because it can be changed into a prime (19223267909) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 176360202 + ... + 176360310.

Almost surely, 2^19223267904 is an apocalyptic number.

19223267904 is the 138648-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19223267904

19223267904 is an abundant number, since it is smaller than the sum of its proper divisors (37455946779).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19223267904 is an equidigital number, since it uses as much as digits as its factorization.

19223267904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 19223267904 in words is "nineteen billion, two hundred twenty-three million, two hundred sixty-seven thousand, nine hundred four".