2136508393 has 2 divisors, whose sum is σ = 2136508394. Its totient is φ = 2136508392.

The previous prime is 2136508331. The next prime is 2136508397. The reversal of 2136508393 is 3938056312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1846249024 + 290259369 = 42968^2 + 17037^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136508393 - 2²¹ = 2134411241 is a prime.

It is a super-2 number, since 2×2136508393² = 9129336226718884898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2136508397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068254196 + 1068254197.

It is an arithmetic number, because the mean of its divisors is an integer number (1068254197).

Almost surely, 2^2136508393 is an apocalyptic number.

It is an amenable number.

2136508393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136508393 is an equidigital number, since it uses as much as digits as its factorization.

2136508393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 2136508393 is about 46222.3797851214. The cubic root of 2136508393 is about 1287.9575059039.

The spelling of 2136508393 in words is "two billion, one hundred thirty-six million, five hundred eight thousand, three hundred ninety-three".