117648913 has 2 divisors, whose sum is σ = 117648914. Its totient is φ = 117648912.

The previous prime is 117648901. The next prime is 117648919. The reversal of 117648913 is 319846711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67125249 + 50523664 = 8193^2 + 7108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117648913 is a prime.

It is not a weakly prime, because it can be changed into another prime (117648919) 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, 58824456 + 58824457.

It is an arithmetic number, because the mean of its divisors is an integer number (58824457).

Almost surely, 2^117648913 is an apocalyptic number.

It is an amenable number.

117648913 is a deficient number, since it is larger than the sum of its proper divisors (1).

117648913 is an equidigital number, since it uses as much as digits as its factorization.

117648913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 117648913 is about 10846.6083639080. The cubic root of 117648913 is about 489.9998792170. Note that the first 3 decimals are identical.

The spelling of 117648913 in words is "one hundred seventeen million, six hundred forty-eight thousand, nine hundred thirteen".