130618885 has 4 divisors (see below), whose sum is σ = 156742668. Its totient is φ = 104495104.

The previous prime is 130618879. The next prime is 130618897. The reversal of 130618885 is 588816031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588816031 = 23 ⋅25600697.

It can be written as a sum of positive squares in 2 ways, for example, as 43046721 + 87572164 = 6561^2 + 9358^2 .

It is a cyclic number.

It is not a de Polignac number, because 130618885 - 2⁹ = 130618373 is a prime.

It is a super-2 number, since 2×130618885² = 34122586237286450, which contains 22 as substring.

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 a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13061884 + ... + 13061893.

It is an arithmetic number, because the mean of its divisors is an integer number (39185667).

Almost surely, 2^130618885 is an apocalyptic number.

It is an amenable number.

130618885 is a deficient number, since it is larger than the sum of its proper divisors (26123783).

130618885 is an equidigital number, since it uses as much as digits as its factorization.

130618885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26123782.

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

The square root of 130618885 is about 11428.8619293436. The cubic root of 130618885 is about 507.3823131383.

The spelling of 130618885 in words is "one hundred thirty million, six hundred eighteen thousand, eight hundred eighty-five".