1818384049 has 8 divisors (see below), whose sum is σ = 1854423720. Its totient is φ = 1782408576.

The previous prime is 1818384023. The next prime is 1818384059. The reversal of 1818384049 is 9404838181.

It can be written as a sum of positive squares in 4 ways, for example, as 3027600 + 1815356449 = 1740^2 + 42607^2 .

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 1818384049 - 2⁵ = 1818384017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818384059) 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, 43309 + ... + 74245.

It is an arithmetic number, because the mean of its divisors is an integer number (231802965).

Almost surely, 2^1818384049 is an apocalyptic number.

It is an amenable number.

1818384049 is a deficient number, since it is larger than the sum of its proper divisors (36039671).

1818384049 is a wasteful number, since it uses less digits than its factorization.

1818384049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32099.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 1818384049 is about 42642.5145717276. The cubic root of 1818384049 is about 1220.5676944556.

The spelling of 1818384049 in words is "one billion, eight hundred eighteen million, three hundred eighty-four thousand, forty-nine".