130568818 has 4 divisors (see below), whose sum is σ = 195853230. Its totient is φ = 65284408.

The previous prime is 130568803. The next prime is 130568821. The reversal of 130568818 is 818865031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818865031 = 31 ⋅26415001.

It can be written as a sum of positive squares in only one way, i.e., 128754409 + 1814409 = 11347^2 + 1347^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 32642203 + ... + 32642206.

Almost surely, 2^130568818 is an apocalyptic number.

130568818 is a deficient number, since it is larger than the sum of its proper divisors (65284412).

130568818 is an equidigital number, since it uses as much as digits as its factorization.

130568818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65284411.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 130568818 is about 11426.6713438341. The cubic root of 130568818 is about 507.3174772950.

The spelling of 130568818 in words is "one hundred thirty million, five hundred sixty-eight thousand, eight hundred eighteen".