130008181 has 2 divisors, whose sum is σ = 130008182. Its totient is φ = 130008180.

The previous prime is 130008169. The next prime is 130008187. The reversal of 130008181 is 181800031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126360081 + 3648100 = 11241^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 130008181 - 2²¹ = 127911029 is a prime.

It is a super-2 number, since 2×130008181² = 33804254253857522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130008187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65004090 + 65004091.

It is an arithmetic number, because the mean of its divisors is an integer number (65004091).

Almost surely, 2^130008181 is an apocalyptic number.

It is an amenable number.

130008181 is a deficient number, since it is larger than the sum of its proper divisors (1).

130008181 is an equidigital number, since it uses as much as digits as its factorization.

130008181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 130008181 is about 11402.1130059301. The cubic root of 130008181 is about 506.5903281706.

The spelling of 130008181 in words is "one hundred thirty million, eight thousand, one hundred eighty-one".