118628813 has 2 divisors, whose sum is σ = 118628814. Its totient is φ = 118628812.

The previous prime is 118628803. The next prime is 118628819. The reversal of 118628813 is 318826811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89056969 + 29571844 = 9437^2 + 5438^2 .

It is a cyclic number.

It is not a de Polignac number, because 118628813 - 2⁸ = 118628557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118628819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59314406 + 59314407.

It is an arithmetic number, because the mean of its divisors is an integer number (59314407).

Almost surely, 2^118628813 is an apocalyptic number.

It is an amenable number.

118628813 is a deficient number, since it is larger than the sum of its proper divisors (1).

118628813 is an equidigital number, since it uses as much as digits as its factorization.

118628813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 38.

The square root of 118628813 is about 10891.6854985810. The cubic root of 118628813 is about 491.3565257055.

The spelling of 118628813 in words is "one hundred eighteen million, six hundred twenty-eight thousand, eight hundred thirteen".