19118044159209 has 12 divisors (see below), whose sum is σ = 27615046294836. Its totient is φ = 12745319563392.

The previous prime is 19118044159157. The next prime is 19118044159211. The reversal of 19118044159209 is 90295144081191.

19118044159209 is a `hidden beast` number, since 1 + 9 + 1 + 1 + 8 + 0 + 4 + 41 + 592 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 208070085609 + 18909974073600 = 456147^2 + 4348560^2 .

It is not a de Polignac number, because 19118044159209 - 2¹⁷ = 19118044028137 is a prime.

It is a super-2 number, since 2×19118044159209² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19118044159009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 673332 + ... + 6220085.

It is an arithmetic number, because the mean of its divisors is an integer number (2301253857903).

Almost surely, 2^{19118044159209} is an apocalyptic number.

It is an amenable number.

19118044159209 is a deficient number, since it is larger than the sum of its proper divisors (8497002135627).

19118044159209 is a wasteful number, since it uses less digits than its factorization.

19118044159209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7201576 (or 7201573 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 19118044159209 in words is "nineteen trillion, one hundred eighteen billion, forty-four million, one hundred fifty-nine thousand, two hundred nine".