118226813 has 2 divisors, whose sum is σ = 118226814. Its totient is φ = 118226812.

The previous prime is 118226807. The next prime is 118226819. The reversal of 118226813 is 318622811.

It is a balanced prime because it is at equal distance from previous prime (118226807) and next prime (118226819).

It can be written as a sum of positive squares in only one way, i.e., 61042969 + 57183844 = 7813^2 + 7562^2 .

It is a cyclic number.

It is not a de Polignac number, because 118226813 - 2⁸ = 118226557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118226813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118226819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59113406 + 59113407.

It is an arithmetic number, because the mean of its divisors is an integer number (59113407).

Almost surely, 2^118226813 is an apocalyptic number.

It is an amenable number.

118226813 is a deficient number, since it is larger than the sum of its proper divisors (1).

118226813 is an equidigital number, since it uses as much as digits as its factorization.

118226813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 118226813 is about 10873.2153938014. The cubic root of 118226813 is about 490.8008741209.

The spelling of 118226813 in words is "one hundred eighteen million, two hundred twenty-six thousand, eight hundred thirteen".