108081818 has 16 divisors (see below), whose sum is σ = 184864680. Its totient is φ = 46949376.

The previous prime is 108081803. The next prime is 108081821. The reversal of 108081818 is 818180801.

It can be written as a sum of positive squares in 4 ways, for example, as 57714409 + 50367409 = 7597^2 + 7097^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121823 + ... + 122706.

Almost surely, 2^108081818 is an apocalyptic number.

108081818 is a deficient number, since it is larger than the sum of its proper divisors (76782862).

108081818 is a wasteful number, since it uses less digits than its factorization.

108081818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244561.

The product of its (nonzero) digits is 4096, while the sum is 35.

The square root of 108081818 is about 10396.2405705139. The cubic root of 108081818 is about 476.3405426235.

The spelling of 108081818 in words is "one hundred eight million, eighty-one thousand, eight hundred eighteen".