19379929846109 has 64 divisors (see below), whose sum is σ = 23774888309760. Its totient is φ = 15439921643520.

The previous prime is 19379929846097. The next prime is 19379929846163. The reversal of 19379929846109 is 90164892997391.

It is a cyclic number.

It is not a de Polignac number, because 19379929846109 - 2⁴ = 19379929846093 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19379929846109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19379929896109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 542032577 + ... + 542068329.

It is an arithmetic number, because the mean of its divisors is an integer number (371482629840).

Almost surely, 2^{19379929846109} is an apocalyptic number.

It is an amenable number.

19379929846109 is a deficient number, since it is larger than the sum of its proper divisors (4394958463651).

19379929846109 is a wasteful number, since it uses less digits than its factorization.

19379929846109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36510.

The product of its (nonzero) digits is 476171136, while the sum is 77.

The spelling of 19379929846109 in words is "nineteen trillion, three hundred seventy-nine billion, nine hundred twenty-nine million, eight hundred forty-six thousand, one hundred nine".