1804185830427 has 16 divisors (see below), whose sum is σ = 2488567065600. Its totient is φ = 1161465904800.

The previous prime is 1804185830353. The next prime is 1804185830443. The reversal of 1804185830427 is 7240385814081.

It is a happy number.

It is not a de Polignac number, because 1804185830427 - 2¹⁹ = 1804185306139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1804185830427.

It is not an unprimeable number, because it can be changed into a prime (1804185830527) 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 15 ways as a sum of consecutive naturals, for example, 20998177 + ... + 21083922.

It is an arithmetic number, because the mean of its divisors is an integer number (155535441600).

Almost surely, 2^{1804185830427} is an apocalyptic number.

1804185830427 is a deficient number, since it is larger than the sum of its proper divisors (684381235173).

1804185830427 is a wasteful number, since it uses less digits than its factorization.

1804185830427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42082594.

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 1804185830427 in words is "one trillion, eight hundred four billion, one hundred eighty-five million, eight hundred thirty thousand, four hundred twenty-seven".