19827022194 has 36 divisors (see below), whose sum is σ = 49972190814. Its totient is φ = 5664863232.

The previous prime is 19827022181. The next prime is 19827022217. The reversal of 19827022194 is 49122072891.

19827022194 is a `hidden beast` number, since 198 + 270 + 2 + 2 + 194 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19826048025 + 974169 = 140805^2 + 987^2 .

It is a super-2 number, since 2×19827022194² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 11238927 + ... + 11240690.

Almost surely, 2^19827022194 is an apocalyptic number.

19827022194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19827022194 is an abundant number, since it is smaller than the sum of its proper divisors (30145168620).

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

19827022194 is a wasteful number, since it uses less digits than its factorization.

19827022194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22479639 (or 22479629 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 19827022194 in words is "nineteen billion, eight hundred twenty-seven million, twenty-two thousand, one hundred ninety-four".