130737581 has 4 divisors (see below), whose sum is σ = 140794332. Its totient is φ = 120680832.

The previous prime is 130737577. The next prime is 130737583. The reversal of 130737581 is 185737031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 185737031 = 1361 ⋅136471.

It can be written as a sum of positive squares in 2 ways, for example, as 19624900 + 111112681 = 4430^2 + 10541^2 .

It is a cyclic number.

It is not a de Polignac number, because 130737581 - 2² = 130737577 is a prime.

It is a super-2 number, since 2×130737581² = 34184630171463122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130737583) 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, 5028356 + ... + 5028381.

It is an arithmetic number, because the mean of its divisors is an integer number (35198583).

Almost surely, 2^130737581 is an apocalyptic number.

It is an amenable number.

130737581 is a deficient number, since it is larger than the sum of its proper divisors (10056751).

130737581 is a wasteful number, since it uses less digits than its factorization.

130737581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056750.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 130737581 is about 11434.0535681796. The cubic root of 130737581 is about 507.5359561023.

The spelling of 130737581 in words is "one hundred thirty million, seven hundred thirty-seven thousand, five hundred eighty-one".