130185861 has 16 divisors (see below), whose sum is σ = 190463616. Its totient is φ = 78601536.

The previous prime is 130185859. The next prime is 130185883. The reversal of 130185861 is 168581031.

It is not a de Polignac number, because 130185861 - 2¹ = 130185859 is a prime.

It is a super-2 number, since 2×130185861² = 33896716808622642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130185821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29425 + ... + 33558.

It is an arithmetic number, because the mean of its divisors is an integer number (11903976).

Almost surely, 2^130185861 is an apocalyptic number.

It is an amenable number.

130185861 is a deficient number, since it is larger than the sum of its proper divisors (60277755).

130185861 is a wasteful number, since it uses less digits than its factorization.

130185861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63052.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 130185861 is about 11409.9018838902. The cubic root of 130185861 is about 506.8210059491.

The spelling of 130185861 in words is "one hundred thirty million, one hundred eighty-five thousand, eight hundred sixty-one".