117883861 has 2 divisors, whose sum is σ = 117883862. Its totient is φ = 117883860.

The previous prime is 117883853. The next prime is 117883889. The reversal of 117883861 is 168388711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77000625 + 40883236 = 8775^2 + 6394^2 .

It is a cyclic number.

It is not a de Polignac number, because 117883861 - 2³ = 117883853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117883841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58941930 + 58941931.

It is an arithmetic number, because the mean of its divisors is an integer number (58941931).

Almost surely, 2^117883861 is an apocalyptic number.

It is an amenable number.

117883861 is a deficient number, since it is larger than the sum of its proper divisors (1).

117883861 is an equidigital number, since it uses as much as digits as its factorization.

117883861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 43.

The square root of 117883861 is about 10857.4334444195. The cubic root of 117883861 is about 490.3258432457.

The spelling of 117883861 in words is "one hundred seventeen million, eight hundred eighty-three thousand, eight hundred sixty-one".