2136311449 has 2 divisors, whose sum is σ = 2136311450. Its totient is φ = 2136311448.

The previous prime is 2136311393. The next prime is 2136311453. The reversal of 2136311449 is 9441136312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2082553225 + 53758224 = 45635^2 + 7332^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136311449 - 2¹¹ = 2136309401 is a prime.

It is not a weakly prime, because it can be changed into another prime (2136315449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068155724 + 1068155725.

It is an arithmetic number, because the mean of its divisors is an integer number (1068155725).

Almost surely, 2^2136311449 is an apocalyptic number.

It is an amenable number.

2136311449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136311449 is an equidigital number, since it uses as much as digits as its factorization.

2136311449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 2136311449 is about 46220.2493394400. The cubic root of 2136311449 is about 1287.9179299150.

The spelling of 2136311449 in words is "two billion, one hundred thirty-six million, three hundred eleven thousand, four hundred forty-nine".