130445811 has 48 divisors (see below), whose sum is σ = 219248640. Its totient is φ = 74131200.

The previous prime is 130445807. The next prime is 130445837. The reversal of 130445811 is 118544031.

It is a happy number.

It is not a de Polignac number, because 130445811 - 2² = 130445807 is a prime.

It is a super-2 number, since 2×130445811² = 34032219214895442, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (130445311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65886 + ... + 67836.

It is an arithmetic number, because the mean of its divisors is an integer number (4567680).

Almost surely, 2^130445811 is an apocalyptic number.

130445811 is a deficient number, since it is larger than the sum of its proper divisors (88802829).

130445811 is a wasteful number, since it uses less digits than its factorization.

130445811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 130445811 is about 11421.2876244318. The cubic root of 130445811 is about 507.1581150811.

Adding to 130445811 its reverse (118544031), we get a palindrome (248989842).

The spelling of 130445811 in words is "one hundred thirty million, four hundred forty-five thousand, eight hundred eleven".