117381853 has 2 divisors, whose sum is σ = 117381854. Its totient is φ = 117381852.

The previous prime is 117381839. The next prime is 117381863. The reversal of 117381853 is 358183711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113167044 + 4214809 = 10638^2 + 2053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117381853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117381863) 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, 58690926 + 58690927.

It is an arithmetic number, because the mean of its divisors is an integer number (58690927).

Almost surely, 2^117381853 is an apocalyptic number.

It is an amenable number.

117381853 is a deficient number, since it is larger than the sum of its proper divisors (1).

117381853 is an equidigital number, since it uses as much as digits as its factorization.

117381853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 117381853 is about 10834.2906089877. The cubic root of 117381853 is about 489.6288359571.

The spelling of 117381853 in words is "one hundred seventeen million, three hundred eighty-one thousand, eight hundred fifty-three".