36136181 has 2 divisors, whose sum is σ = 36136182. Its totient is φ = 36136180.

The previous prime is 36136159. The next prime is 36136183. The reversal of 36136181 is 18163163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33466225 + 2669956 = 5785^2 + 1634^2 .

It is an emirp because it is prime and its reverse (18163163) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36136181 is a prime.

It is a super-2 number, since 2×36136181² = 2611647154529522, which contains 22 as substring.

Together with 36136183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36136183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18068090 + 18068091.

It is an arithmetic number, because the mean of its divisors is an integer number (18068091).

Almost surely, 2^36136181 is an apocalyptic number.

It is an amenable number.

36136181 is a deficient number, since it is larger than the sum of its proper divisors (1).

36136181 is an equidigital number, since it uses as much as digits as its factorization.

36136181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 36136181 is about 6011.3377047043. The cubic root of 36136181 is about 330.6085526223.

The spelling of 36136181 in words is "thirty-six million, one hundred thirty-six thousand, one hundred eighty-one".