130618881 has 6 divisors (see below), whose sum is σ = 188671730. Its totient is φ = 87079248.

The previous prime is 130618879. The next prime is 130618897. The reversal of 130618881 is 188816031.

130618881 is a `hidden beast` number, since 1 + 30 + 618 + 8 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 70711281 + 59907600 = 8409^2 + 7740^2 .

It is not a de Polignac number, because 130618881 - 2¹ = 130618879 is a prime.

It is a super-2 number, since 2×130618881² = 34122584147384322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130618811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7256596 + ... + 7256613.

Almost surely, 2^130618881 is an apocalyptic number.

It is an amenable number.

130618881 is a deficient number, since it is larger than the sum of its proper divisors (58052849).

130618881 is a wasteful number, since it uses less digits than its factorization.

130618881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14513215 (or 14513212 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 130618881 is about 11428.8617543481. The cubic root of 130618881 is about 507.3823079591.

The spelling of 130618881 in words is "one hundred thirty million, six hundred eighteen thousand, eight hundred eighty-one".