19922169619 has 4 divisors (see below), whose sum is σ = 21733275960. Its totient is φ = 18111063280.

The previous prime is 19922169613. The next prime is 19922169649. The reversal of 19922169619 is 91696122991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19922169619 - 2⁵ = 19922169587 is a prime.

It is a super-2 number, since 2×19922169619² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19922169619.

It is not an unprimeable number, because it can be changed into a prime (19922169613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905553154 + ... + 905553175.

It is an arithmetic number, because the mean of its divisors is an integer number (5433318990).

Almost surely, 2^19922169619 is an apocalyptic number.

19922169619 is a deficient number, since it is larger than the sum of its proper divisors (1811106341).

19922169619 is a wasteful number, since it uses less digits than its factorization.

19922169619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811106340.

The product of its digits is 944784, while the sum is 55.

The spelling of 19922169619 in words is "nineteen billion, nine hundred twenty-two million, one hundred sixty-nine thousand, six hundred nineteen".