134118581 has 2 divisors, whose sum is σ = 134118582. Its totient is φ = 134118580.

The previous prime is 134118553. The next prime is 134118583. The reversal of 134118581 is 185811431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122456356 + 11662225 = 11066^2 + 3415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134118581 is a prime.

It is a super-2 number, since 2×134118581² = 35975587538907122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 134118583, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134118583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67059290 + 67059291.

It is an arithmetic number, because the mean of its divisors is an integer number (67059291).

Almost surely, 2^134118581 is an apocalyptic number.

It is an amenable number.

134118581 is a deficient number, since it is larger than the sum of its proper divisors (1).

134118581 is an equidigital number, since it uses as much as digits as its factorization.

134118581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 32.

The square root of 134118581 is about 11580.9576892414. The cubic root of 134118581 is about 511.8738970141.

The spelling of 134118581 in words is "one hundred thirty-four million, one hundred eighteen thousand, five hundred eighty-one".