118646513 has 2 divisors, whose sum is σ = 118646514. Its totient is φ = 118646512.

The previous prime is 118646509. The next prime is 118646533. The reversal of 118646513 is 315646811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118548544 + 97969 = 10888^2 + 313^2 .

It is an emirp because it is prime and its reverse (315646811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118646513 - 2² = 118646509 is a prime.

It is not a weakly prime, because it can be changed into another prime (118646533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59323256 + 59323257.

It is an arithmetic number, because the mean of its divisors is an integer number (59323257).

Almost surely, 2^118646513 is an apocalyptic number.

It is an amenable number.

118646513 is a deficient number, since it is larger than the sum of its proper divisors (1).

118646513 is an equidigital number, since it uses as much as digits as its factorization.

118646513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 118646513 is about 10892.4980146888. The cubic root of 118646513 is about 491.3809620903.

The spelling of 118646513 in words is "one hundred eighteen million, six hundred forty-six thousand, five hundred thirteen".