118640903 has 2 divisors, whose sum is σ = 118640904. Its totient is φ = 118640902.

The previous prime is 118640897. The next prime is 118640911. The reversal of 118640903 is 309046811.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (309046811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118640903 - 2⁴ = 118640887 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118640903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118640933) 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, 59320451 + 59320452.

It is an arithmetic number, because the mean of its divisors is an integer number (59320452).

Almost surely, 2^118640903 is an apocalyptic number.

118640903 is a deficient number, since it is larger than the sum of its proper divisors (1).

118640903 is an equidigital number, since it uses as much as digits as its factorization.

118640903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 118640903 is about 10892.2404949579. The cubic root of 118640903 is about 491.3732172620.

The spelling of 118640903 in words is "one hundred eighteen million, six hundred forty thousand, nine hundred three".