118728769 has 2 divisors, whose sum is σ = 118728770. Its totient is φ = 118728768.

The previous prime is 118728767. The next prime is 118728781. The reversal of 118728769 is 967827811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117072400 + 1656369 = 10820^2 + 1287^2 .

It is a cyclic number.

It is not a de Polignac number, because 118728769 - 2¹ = 118728767 is a prime.

It is a super-2 number, since 2×118728769² = 28193041176510722, which contains 22 as substring.

Together with 118728767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (118728767) 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, 59364384 + 59364385.

It is an arithmetic number, because the mean of its divisors is an integer number (59364385).

Almost surely, 2^118728769 is an apocalyptic number.

It is an amenable number.

118728769 is a deficient number, since it is larger than the sum of its proper divisors (1).

118728769 is an equidigital number, since it uses as much as digits as its factorization.

118728769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 49.

The square root of 118728769 is about 10896.2731702174. The cubic root of 118728769 is about 491.4944917518.

The spelling of 118728769 in words is "one hundred eighteen million, seven hundred twenty-eight thousand, seven hundred sixty-nine".