118911649 has 2 divisors, whose sum is σ = 118911650. Its totient is φ = 118911648.

The previous prime is 118911623. The next prime is 118911677. The reversal of 118911649 is 946119811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94478400 + 24433249 = 9720^2 + 4943^2 .

It is a cyclic number.

It is not a de Polignac number, because 118911649 - 2¹⁹ = 118387361 is a prime.

It is not a weakly prime, because it can be changed into another prime (118915649) 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, 59455824 + 59455825.

It is an arithmetic number, because the mean of its divisors is an integer number (59455825).

Almost surely, 2^118911649 is an apocalyptic number.

It is an amenable number.

118911649 is a deficient number, since it is larger than the sum of its proper divisors (1).

118911649 is an equidigital number, since it uses as much as digits as its factorization.

118911649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 40.

The square root of 118911649 is about 10904.6618012665. The cubic root of 118911649 is about 491.7467148163.

The spelling of 118911649 in words is "one hundred eighteen million, nine hundred eleven thousand, six hundred forty-nine".