118731797 has 2 divisors, whose sum is σ = 118731798. Its totient is φ = 118731796.

The previous prime is 118731793. The next prime is 118731827. The reversal of 118731797 is 797137811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72573361 + 46158436 = 8519^2 + 6794^2 .

It is a cyclic number.

It is not a de Polignac number, because 118731797 - 2² = 118731793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118731793) 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, 59365898 + 59365899.

It is an arithmetic number, because the mean of its divisors is an integer number (59365899).

Almost surely, 2^118731797 is an apocalyptic number.

It is an amenable number.

118731797 is a deficient number, since it is larger than the sum of its proper divisors (1).

118731797 is an equidigital number, since it uses as much as digits as its factorization.

118731797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 44.

The square root of 118731797 is about 10896.4121159215. The cubic root of 118731797 is about 491.4986699940.

The spelling of 118731797 in words is "one hundred eighteen million, seven hundred thirty-one thousand, seven hundred ninety-seven".