19418336109 has 24 divisors (see below), whose sum is σ = 30212362752. Its totient is φ = 11983260960.

The previous prime is 19418336101. The next prime is 19418336111. The reversal of 19418336109 is 90163381491.

19418336109 is a `hidden beast` number, since 19 + 4 + 18 + 3 + 3 + 610 + 9 = 666.

It is not a de Polignac number, because 19418336109 - 2³ = 19418336101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19418336101) 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 23 ways as a sum of consecutive naturals, for example, 1506622 + ... + 1519455.

It is an arithmetic number, because the mean of its divisors is an integer number (1258848448).

Almost surely, 2^19418336109 is an apocalyptic number.

It is an amenable number.

19418336109 is a deficient number, since it is larger than the sum of its proper divisors (10794026643).

19418336109 is a wasteful number, since it uses less digits than its factorization.

19418336109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026137 (or 3026134 counting only the distinct ones).

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

The spelling of 19418336109 in words is "nineteen billion, four hundred eighteen million, three hundred thirty-six thousand, one hundred nine".