136363649 has 2 divisors, whose sum is σ = 136363650. Its totient is φ = 136363648.

The previous prime is 136363631. The next prime is 136363651. The reversal of 136363649 is 946363631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134560000 + 1803649 = 11600^2 + 1343^2 .

It is an emirp because it is prime and its reverse (946363631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136363649 - 2⁸ = 136363393 is a prime.

Together with 136363651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136363679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68181824 + 68181825.

It is an arithmetic number, because the mean of its divisors is an integer number (68181825).

Almost surely, 2^136363649 is an apocalyptic number.

It is an amenable number.

136363649 is a deficient number, since it is larger than the sum of its proper divisors (1).

136363649 is an equidigital number, since it uses as much as digits as its factorization.

136363649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 41.

The square root of 136363649 is about 11677.4847034796. The cubic root of 136363649 is about 514.7142650990.

The spelling of 136363649 in words is "one hundred thirty-six million, three hundred sixty-three thousand, six hundred forty-nine".