118371161 has 2 divisors, whose sum is σ = 118371162. Its totient is φ = 118371160.

The previous prime is 118371139. The next prime is 118371163. The reversal of 118371161 is 161173811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110775625 + 7595536 = 10525^2 + 2756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118371161 is a prime.

Together with 118371163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118371163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59185580 + 59185581.

It is an arithmetic number, because the mean of its divisors is an integer number (59185581).

Almost surely, 2^118371161 is an apocalyptic number.

It is an amenable number.

118371161 is a deficient number, since it is larger than the sum of its proper divisors (1).

118371161 is an equidigital number, since it uses as much as digits as its factorization.

118371161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 29.

The square root of 118371161 is about 10879.8511478788. The cubic root of 118371161 is about 491.0005392373. Note that the first 3 decimals are identical.

The spelling of 118371161 in words is "one hundred eighteen million, three hundred seventy-one thousand, one hundred sixty-one".