1808218082 has 16 divisors (see below), whose sum is σ = 2959555104. Its totient is φ = 821736000.

The previous prime is 1808218081. The next prime is 1808218091. The reversal of 1808218082 is 2808128081.

It is not an unprimeable number, because it can be changed into a prime (1808218081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194357 + ... + 203447.

It is an arithmetic number, because the mean of its divisors is an integer number (184972194).

Almost surely, 2^1808218082 is an apocalyptic number.

1808218082 is a deficient number, since it is larger than the sum of its proper divisors (1151337022).

1808218082 is a wasteful number, since it uses less digits than its factorization.

1808218082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18145.

The product of its (nonzero) digits is 16384, while the sum is 38.

The square root of 1808218082 is about 42523.1476022178. The cubic root of 1808218082 is about 1218.2888494126.

Subtracting 1808218082 from its reverse (2808128081), we obtain a palindrome (999909999).

The spelling of 1808218082 in words is "one billion, eight hundred eight million, two hundred eighteen thousand, eighty-two".