1804995489 has 8 divisors (see below), whose sum is σ = 2625448032. Its totient is φ = 1093936640.

The previous prime is 1804995487. The next prime is 1804995499. The reversal of 1804995489 is 9845994081.

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

It is a cyclic number.

It is not a de Polignac number, because 1804995489 - 2¹ = 1804995487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1804995487) 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, 27348384 + ... + 27348449.

It is an arithmetic number, because the mean of its divisors is an integer number (328181004).

Almost surely, 2^1804995489 is an apocalyptic number.

It is an amenable number.

1804995489 is a deficient number, since it is larger than the sum of its proper divisors (820452543).

1804995489 is a wasteful number, since it uses less digits than its factorization.

1804995489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54696847.

The product of its (nonzero) digits is 3732480, while the sum is 57.

The square root of 1804995489 is about 42485.2384835015. The cubic root of 1804995489 is about 1217.5646772208.

The spelling of 1804995489 in words is "one billion, eight hundred four million, nine hundred ninety-five thousand, four hundred eighty-nine".