19806294122 has 8 divisors (see below), whose sum is σ = 30003594372. Its totient is φ = 9805096000.

The previous prime is 19806294121. The next prime is 19806294149. The reversal of 19806294122 is 22149260891.

It can be written as a sum of positive squares in 2 ways, for example, as 13506855961 + 6299438161 = 116219^2 + 79369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19806294121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49025279 + ... + 49025682.

Almost surely, 2^19806294122 is an apocalyptic number.

19806294122 is a deficient number, since it is larger than the sum of its proper divisors (10197300250).

19806294122 is a wasteful number, since it uses less digits than its factorization.

19806294122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98051064.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 19806294122 in words is "nineteen billion, eight hundred six million, two hundred ninety-four thousand, one hundred twenty-two".