118931101813 has 2 divisors, whose sum is σ = 118931101814. Its totient is φ = 118931101812.

The previous prime is 118931101799. The next prime is 118931101819. The reversal of 118931101813 is 318101139811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99094632849 + 19836468964 = 314793^2 + 140842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118931101813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118931101819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59465550906 + 59465550907.

It is an arithmetic number, because the mean of its divisors is an integer number (59465550907).

Almost surely, 2^118931101813 is an apocalyptic number.

It is an amenable number.

118931101813 is a deficient number, since it is larger than the sum of its proper divisors (1).

118931101813 is an equidigital number, since it uses as much as digits as its factorization.

118931101813 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 37.

The spelling of 118931101813 in words is "one hundred eighteen billion, nine hundred thirty-one million, one hundred one thousand, eight hundred thirteen".