2236136161 has 4 divisors (see below), whose sum is σ = 2555584192. Its totient is φ = 1916688132.

The previous prime is 2236136141. The next prime is 2236136171. The reversal of 2236136161 is 1616316322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1616316322 = 2 ⋅808158161.

It is a cyclic number.

It is not a de Polignac number, because 2236136161 - 2¹⁷ = 2236005089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2236136101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159724005 + ... + 159724018.

It is an arithmetic number, because the mean of its divisors is an integer number (638896048).

Almost surely, 2^2236136161 is an apocalyptic number.

It is an amenable number.

2236136161 is a deficient number, since it is larger than the sum of its proper divisors (319448031).

2236136161 is an equidigital number, since it uses as much as digits as its factorization.

2236136161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319448030.

The product of its digits is 7776, while the sum is 31.

The square root of 2236136161 is about 47287.8013974006. The cubic root of 2236136161 is about 1307.6737771943.

The spelling of 2236136161 in words is "two billion, two hundred thirty-six million, one hundred thirty-six thousand, one hundred sixty-one".