130188386 has 4 divisors (see below), whose sum is σ = 195282582. Its totient is φ = 65094192.

The previous prime is 130188379. The next prime is 130188389. The reversal of 130188386 is 683881031.

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., 88830625 + 41357761 = 9425^2 + 6431^2 .

It is not an unprimeable number, because it can be changed into a prime (130188389) 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 as a sum of consecutive naturals, namely, 32547095 + ... + 32547098.

Almost surely, 2^130188386 is an apocalyptic number.

130188386 is a deficient number, since it is larger than the sum of its proper divisors (65094196).

130188386 is an equidigital number, since it uses as much as digits as its factorization.

130188386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65094195.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 130188386 is about 11410.0125328590. The cubic root of 130188386 is about 506.8242825844.

The spelling of 130188386 in words is "one hundred thirty million, one hundred eighty-eight thousand, three hundred eighty-six".