118871161 has 2 divisors, whose sum is σ = 118871162. Its totient is φ = 118871160.

The previous prime is 118871147. The next prime is 118871171. The reversal of 118871161 is 161178811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95648400 + 23222761 = 9780^2 + 4819^2 .

It is an emirp because it is prime and its reverse (161178811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118871161 - 2⁹ = 118870649 is a prime.

It is not a weakly prime, because it can be changed into another prime (118871171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59435580 + 59435581.

It is an arithmetic number, because the mean of its divisors is an integer number (59435581).

Almost surely, 2^118871161 is an apocalyptic number.

It is an amenable number.

118871161 is a deficient number, since it is larger than the sum of its proper divisors (1).

118871161 is an equidigital number, since it uses as much as digits as its factorization.

118871161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 34.

The square root of 118871161 is about 10902.8051894914. The cubic root of 118871161 is about 491.6908971811.

The spelling of 118871161 in words is "one hundred eighteen million, eight hundred seventy-one thousand, one hundred sixty-one".