1799378632209 has 8 divisors (see below), whose sum is σ = 2399246656192. Its totient is φ = 1199548181520.

The previous prime is 1799378632199. The next prime is 1799378632291. The reversal of 1799378632209 is 9022368739971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1799378632209 - 2⁷ = 1799378632081 is a prime.

It is a Duffinian number.

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 1799378632209.

It is not an unprimeable number, because it can be changed into a prime (1799378632309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9281389 + ... + 9473274.

It is an arithmetic number, because the mean of its divisors is an integer number (299905832024).

Almost surely, 2^{1799378632209} is an apocalyptic number.

It is an amenable number.

1799378632209 is a deficient number, since it is larger than the sum of its proper divisors (599868023983).

1799378632209 is a wasteful number, since it uses less digits than its factorization.

1799378632209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18786647.

The product of its (nonzero) digits is 61725888, while the sum is 66.

The spelling of 1799378632209 in words is "one trillion, seven hundred ninety-nine billion, three hundred seventy-eight million, six hundred thirty-two thousand, two hundred nine".