130730818 has 4 divisors (see below), whose sum is σ = 196096230. Its totient is φ = 65365408.

The previous prime is 130730801. The next prime is 130730819. The reversal of 130730818 is 818037031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 90497169 + 40233649 = 9513^2 + 6343^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 130730818.

It is not an unprimeable number, because it can be changed into a prime (130730819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32682703 + ... + 32682706.

Almost surely, 2^130730818 is an apocalyptic number.

130730818 is a deficient number, since it is larger than the sum of its proper divisors (65365412).

130730818 is an equidigital number, since it uses as much as digits as its factorization.

130730818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65365411.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 130730818 is about 11433.7578249673. The cubic root of 130730818 is about 507.5272044110.

Adding to 130730818 its reverse (818037031), we get a palindrome (948767849).

The spelling of 130730818 in words is "one hundred thirty million, seven hundred thirty thousand, eight hundred eighteen".