19044991206 has 12 divisors (see below), whose sum is σ = 41264147652. Its totient is φ = 6348330396.

The previous prime is 19044991193. The next prime is 19044991249. The reversal of 19044991206 is 60219944091.

19044991206 is a `hidden beast` number, since 190 + 449 + 9 + 12 + 0 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 529027516 + ... + 529027551.

It is an arithmetic number, because the mean of its divisors is an integer number (3438678971).

Almost surely, 2^19044991206 is an apocalyptic number.

19044991206 is an abundant number, since it is smaller than the sum of its proper divisors (22219156446).

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

19044991206 is a wasteful number, since it uses less digits than its factorization.

19044991206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058055075 (or 1058055072 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 19044991206 in words is "nineteen billion, forty-four million, nine hundred ninety-one thousand, two hundred six".