19161380322 has 162 divisors, whose sum is σ = 49756655403. Its totient is φ = 5313763728.

The previous prime is 19161380311. The next prime is 19161380327. The reversal of 19161380322 is 22308316191.

19161380322 is a `hidden beast` number, since 1 + 9 + 1 + 613 + 8 + 0 + 32 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9580690161 + 9580690161 = 97881^2 + 97881^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=97881.

It is not an unprimeable number, because it can be changed into a prime (19161380327) 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 80 ways as a sum of consecutive naturals, for example, 242549079 + ... + 242549157.

Almost surely, 2^19161380322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19161380322

19161380322 is an abundant number, since it is smaller than the sum of its proper divisors (30595275081).

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

19161380322 is an equidigital number, since it uses as much as digits as its factorization.

19161380322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 19161380322 in words is "nineteen billion, one hundred sixty-one million, three hundred eighty thousand, three hundred twenty-two".