130783861 has 6 divisors (see below), whose sum is σ = 141618210. Its totient is φ = 120723408.

The previous prime is 130783841. The next prime is 130783867. The reversal of 130783861 is 168387031.

It can be written as a sum of positive squares in 3 ways, for example, as 481636 + 130302225 = 694^2 + 11415^2 .

It is not a de Polignac number, because 130783861 - 2¹¹ = 130781813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130783861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130783867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 386766 + ... + 387103.

It is an arithmetic number, because the mean of its divisors is an integer number (23603035).

Almost surely, 2^130783861 is an apocalyptic number.

It is an amenable number.

130783861 is a deficient number, since it is larger than the sum of its proper divisors (10834349).

130783861 is an equidigital number, since it uses as much as digits as its factorization.

130783861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773895 (or 773882 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 130783861 is about 11436.0771683301. The cubic root of 130783861 is about 507.5958368517.

The spelling of 130783861 in words is "one hundred thirty million, seven hundred eighty-three thousand, eight hundred sixty-one".