130188687 has 4 divisors (see below), whose sum is σ = 173584920. Its totient is φ = 86792456.

The previous prime is 130188677. The next prime is 130188733. The reversal of 130188687 is 786881031.

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

It is a cyclic number.

It is not a de Polignac number, because 130188687 - 2⁷ = 130188559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130188677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21698112 + ... + 21698117.

It is an arithmetic number, because the mean of its divisors is an integer number (43396230).

Almost surely, 2^130188687 is an apocalyptic number.

130188687 is a deficient number, since it is larger than the sum of its proper divisors (43396233).

130188687 is an equidigital number, since it uses as much as digits as its factorization.

130188687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43396232.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 130188687 is about 11410.0257230210. The cubic root of 130188687 is about 506.8246731824.

The spelling of 130188687 in words is "one hundred thirty million, one hundred eighty-eight thousand, six hundred eighty-seven".