130968637 has 4 divisors (see below), whose sum is σ = 134163036. Its totient is φ = 127774240.

The previous prime is 130968599. The next prime is 130968661. The reversal of 130968637 is 736869031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 736869031 = 3583 ⋅205657.

It can be written as a sum of positive squares in 2 ways, for example, as 18481401 + 112487236 = 4299^2 + 10606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130968637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130968593 and 130968602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130968667) 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 3 ways as a sum of consecutive naturals, for example, 1597138 + ... + 1597219.

It is an arithmetic number, because the mean of its divisors is an integer number (33540759).

Almost surely, 2^130968637 is an apocalyptic number.

It is an amenable number.

130968637 is a deficient number, since it is larger than the sum of its proper divisors (3194399).

130968637 is an equidigital number, since it uses as much as digits as its factorization.

130968637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194398.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 130968637 is about 11444.1529612287. The cubic root of 130968637 is about 507.8347740611.

The spelling of 130968637 in words is "one hundred thirty million, nine hundred sixty-eight thousand, six hundred thirty-seven".