19230190561 has 4 divisors (see below), whose sum is σ = 19230941124. Its totient is φ = 19229440000.

The previous prime is 19230190559. The next prime is 19230190571. The reversal of 19230190561 is 16509103291.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16509103291 = 17 ⋅971123723.

It can be written as a sum of positive squares in 2 ways, for example, as 11612217600 + 7617972961 = 107760^2 + 87281^2 .

It is a cyclic number.

It is not a de Polignac number, because 19230190561 - 2¹ = 19230190559 is a prime.

It is a super-3 number, since 3×19230190561³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19230190561.

It is not an unprimeable number, because it can be changed into a prime (19230190571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335440 + ... + 388561.

It is an arithmetic number, because the mean of its divisors is an integer number (4807735281).

Almost surely, 2^19230190561 is an apocalyptic number.

It is an amenable number.

19230190561 is a deficient number, since it is larger than the sum of its proper divisors (750563).

19230190561 is an equidigital number, since it uses as much as digits as its factorization.

19230190561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750562.

The product of its (nonzero) digits is 14580, while the sum is 37.

The spelling of 19230190561 in words is "nineteen billion, two hundred thirty million, one hundred ninety thousand, five hundred sixty-one".