117489161 has 2 divisors, whose sum is σ = 117489162. Its totient is φ = 117489160.

The previous prime is 117489157. The next prime is 117489173. The reversal of 117489161 is 161984711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58813561 + 58675600 = 7669^2 + 7660^2 .

It is a cyclic number.

It is not a de Polignac number, because 117489161 - 2² = 117489157 is a prime.

It is not a weakly prime, because it can be changed into another prime (117489061) 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, 58744580 + 58744581.

It is an arithmetic number, because the mean of its divisors is an integer number (58744581).

Almost surely, 2^117489161 is an apocalyptic number.

It is an amenable number.

117489161 is a deficient number, since it is larger than the sum of its proper divisors (1).

117489161 is an equidigital number, since it uses as much as digits as its factorization.

117489161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 38.

The square root of 117489161 is about 10839.2417170206. The cubic root of 117489161 is about 489.7779932793. Note that the first 3 decimals are identical.

The spelling of 117489161 in words is "one hundred seventeen million, four hundred eighty-nine thousand, one hundred sixty-one".