19229827997 has 8 divisors (see below), whose sum is σ = 19924332216. Its totient is φ = 18544522752.

The previous prime is 19229827963. The next prime is 19229828011. The reversal of 19229827997 is 79972892291.

It can be written as a sum of positive squares in 4 ways, for example, as 7285305316 + 11944522681 = 85354^2 + 109291^2 .

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 19229827997 - 2³² = 14934860701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19229827957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2295488 + ... + 2303849.

It is an arithmetic number, because the mean of its divisors is an integer number (2490541527).

Almost surely, 2^19229827997 is an apocalyptic number.

It is an amenable number.

19229827997 is a deficient number, since it is larger than the sum of its proper divisors (694504219).

19229827997 is a wasteful number, since it uses less digits than its factorization.

19229827997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599487.

The product of its digits is 20575296, while the sum is 65.

The spelling of 19229827997 in words is "nineteen billion, two hundred twenty-nine million, eight hundred twenty-seven thousand, nine hundred ninety-seven".