118728613 has 2 divisors, whose sum is σ = 118728614. Its totient is φ = 118728612.

The previous prime is 118728611. The next prime is 118728619. The reversal of 118728613 is 316827811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82029249 + 36699364 = 9057^2 + 6058^2 .

It is a cyclic number.

It is not a de Polignac number, because 118728613 - 2¹ = 118728611 is a prime.

Together with 118728611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118728611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59364306 + 59364307.

It is an arithmetic number, because the mean of its divisors is an integer number (59364307).

Almost surely, 2^118728613 is an apocalyptic number.

It is an amenable number.

118728613 is a deficient number, since it is larger than the sum of its proper divisors (1).

118728613 is an equidigital number, since it uses as much as digits as its factorization.

118728613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The square root of 118728613 is about 10896.2660118042. The cubic root of 118728613 is about 491.4942764904.

The spelling of 118728613 in words is "one hundred eighteen million, seven hundred twenty-eight thousand, six hundred thirteen".