19922473081 has 16 divisors (see below), whose sum is σ = 22964281216. Its totient is φ = 16930083456.

The previous prime is 19922473033. The next prime is 19922473093. The reversal of 19922473081 is 18037422991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19922473081 - 2¹⁵ = 19922440313 is a prime.

It is a super-2 number, since 2×19922473081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19922473031) 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 15 ways as a sum of consecutive naturals, for example, 482410 + ... + 522076.

It is an arithmetic number, because the mean of its divisors is an integer number (1435267576).

Almost surely, 2^19922473081 is an apocalyptic number.

It is an amenable number.

19922473081 is a deficient number, since it is larger than the sum of its proper divisors (3041808135).

19922473081 is a wasteful number, since it uses less digits than its factorization.

19922473081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40288.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 19922473081 in words is "nineteen billion, nine hundred twenty-two million, four hundred seventy-three thousand, eighty-one".