1804946870909 has 32 divisors (see below), whose sum is σ = 2227580678400. Its totient is φ = 1424166105600.

The previous prime is 1804946870897. The next prime is 1804946870939. The reversal of 1804946870909 is 9090786494081.

It is not a de Polignac number, because 1804946870909 - 2²⁰ = 1804945822333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804946870939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126380849 + ... + 126395129.

It is an arithmetic number, because the mean of its divisors is an integer number (69611896200).

Almost surely, 2^{1804946870909} is an apocalyptic number.

It is an amenable number.

1804946870909 is a deficient number, since it is larger than the sum of its proper divisors (422633807491).

1804946870909 is a wasteful number, since it uses less digits than its factorization.

1804946870909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18021.

The product of its (nonzero) digits is 31352832, while the sum is 65.

The spelling of 1804946870909 in words is "one trillion, eight hundred four billion, nine hundred forty-six million, eight hundred seventy thousand, nine hundred nine".