1904397209573 has 16 divisors (see below), whose sum is σ = 2018841431040. Its totient is φ = 1790222881536.

The previous prime is 1904397209569. The next prime is 1904397209579. The reversal of 1904397209573 is 3759027934091.

It is a cyclic number.

It is not a de Polignac number, because 1904397209573 - 2² = 1904397209569 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1904397209579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83820011 + ... + 83842727.

It is an arithmetic number, because the mean of its divisors is an integer number (126177589440).

Almost surely, 2^{1904397209573} is an apocalyptic number.

It is an amenable number.

1904397209573 is a deficient number, since it is larger than the sum of its proper divisors (114444221467).

1904397209573 is a wasteful number, since it uses less digits than its factorization.

1904397209573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28436.

The product of its (nonzero) digits is 12859560, while the sum is 59.

The spelling of 1904397209573 in words is "one trillion, nine hundred four billion, three hundred ninety-seven million, two hundred nine thousand, five hundred seventy-three".