117830851 has 2 divisors, whose sum is σ = 117830852. Its totient is φ = 117830850.

The previous prime is 117830849. The next prime is 117830897. The reversal of 117830851 is 158038711.

It is a weak prime.

It is an emirp because it is prime and its reverse (158038711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117830851 - 2¹ = 117830849 is a prime.

Together with 117830849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (117830821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58915425 + 58915426.

It is an arithmetic number, because the mean of its divisors is an integer number (58915426).

Almost surely, 2^117830851 is an apocalyptic number.

117830851 is the 4855-th centered decagonal number.

117830851 is a deficient number, since it is larger than the sum of its proper divisors (1).

117830851 is an equidigital number, since it uses as much as digits as its factorization.

117830851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 117830851 is about 10854.9919852573. The cubic root of 117830851 is about 490.2523356715.

The spelling of 117830851 in words is "one hundred seventeen million, eight hundred thirty thousand, eight hundred fifty-one".