1804613945 has 8 divisors (see below), whose sum is σ = 2165766144. Its totient is φ = 1443538224.

The previous prime is 1804613933. The next prime is 1804613953. The reversal of 1804613945 is 5493164081.

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 1804613945 - 2²² = 1800419641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74312 + ... + 95558.

It is an arithmetic number, because the mean of its divisors is an integer number (270720768).

Almost surely, 2^1804613945 is an apocalyptic number.

It is an amenable number.

1804613945 is a deficient number, since it is larger than the sum of its proper divisors (361152199).

1804613945 is a wasteful number, since it uses less digits than its factorization.

1804613945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38239.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1804613945 is about 42480.7479336228. The cubic root of 1804613945 is about 1217.4788806566.

The spelling of 1804613945 in words is "one billion, eight hundred four million, six hundred thirteen thousand, nine hundred forty-five".