118218377 has 2 divisors, whose sum is σ = 118218378. Its totient is φ = 118218376.

The previous prime is 118218349. The next prime is 118218403. The reversal of 118218377 is 773812811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92371321 + 25847056 = 9611^2 + 5084^2 .

It is an emirp because it is prime and its reverse (773812811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118218377 - 2¹⁶ = 118152841 is a prime.

It is a pancake number, because a pancake can be divided into 118218377 parts by 15376 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 118218377.

It is not a weakly prime, because it can be changed into another prime (118218307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59109188 + 59109189.

It is an arithmetic number, because the mean of its divisors is an integer number (59109189).

Almost surely, 2^118218377 is an apocalyptic number.

It is an amenable number.

118218377 is a deficient number, since it is larger than the sum of its proper divisors (1).

118218377 is an equidigital number, since it uses as much as digits as its factorization.

118218377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 38.

The square root of 118218377 is about 10872.8274611529. The cubic root of 118218377 is about 490.7892002472.

The spelling of 118218377 in words is "one hundred eighteen million, two hundred eighteen thousand, three hundred seventy-seven".