118297771 has 2 divisors, whose sum is σ = 118297772. Its totient is φ = 118297770.

The previous prime is 118297721. The next prime is 118297787. The reversal of 118297771 is 177792811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118297771 is a prime.

It is not a weakly prime, because it can be changed into another prime (118297721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59148885 + 59148886.

It is an arithmetic number, because the mean of its divisors is an integer number (59148886).

Almost surely, 2^118297771 is an apocalyptic number.

118297771 is a deficient number, since it is larger than the sum of its proper divisors (1).

118297771 is an equidigital number, since it uses as much as digits as its factorization.

118297771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 43.

The square root of 118297771 is about 10876.4778765922. The cubic root of 118297771 is about 490.8990449798.

It can be divided in two parts, 11829 and 7771, that added together give a square (19600 = 140²).

The spelling of 118297771 in words is "one hundred eighteen million, two hundred ninety-seven thousand, seven hundred seventy-one".