1636500113 has 2 divisors, whose sum is σ = 1636500114. Its totient is φ = 1636500112.

The previous prime is 1636500109. The next prime is 1636500139. The reversal of 1636500113 is 3110056361.

It is an a-pointer prime, because the next prime (1636500139) can be obtained adding 1636500113 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1455651409 + 180848704 = 38153^2 + 13448^2 .

It is an emirp because it is prime and its reverse (3110056361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1636500113 - 2² = 1636500109 is a prime.

It is not a weakly prime, because it can be changed into another prime (1636500413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 818250056 + 818250057.

It is an arithmetic number, because the mean of its divisors is an integer number (818250057).

Almost surely, 2^1636500113 is an apocalyptic number.

It is an amenable number.

1636500113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1636500113 is an equidigital number, since it uses as much as digits as its factorization.

1636500113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1636500113 is about 40453.6786089967. The cubic root of 1636500113 is about 1178.4342233973.

Adding to 1636500113 its reverse (3110056361), we get a palindrome (4746556474).

The spelling of 1636500113 in words is "one billion, six hundred thirty-six million, five hundred thousand, one hundred thirteen".