130642186 has 8 divisors (see below), whose sum is σ = 196016580. Its totient is φ = 65303328.

The previous prime is 130642181. The next prime is 130642199. The reversal of 130642186 is 681246031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117180625 + 13461561 = 10825^2 + 3669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (130642181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4110 + ... + 16678.

Almost surely, 2^130642186 is an apocalyptic number.

130642186 is a deficient number, since it is larger than the sum of its proper divisors (65374394).

130642186 is a wasteful number, since it uses less digits than its factorization.

130642186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17768.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 130642186 is about 11429.8812767237. The cubic root of 130642186 is about 507.4124818549.

The spelling of 130642186 in words is "one hundred thirty million, six hundred forty-two thousand, one hundred eighty-six".