118413509 has 2 divisors, whose sum is σ = 118413510. Its totient is φ = 118413508.

The previous prime is 118413487. The next prime is 118413577. The reversal of 118413509 is 905314811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108784900 + 9628609 = 10430^2 + 3103^2 .

It is an emirp because it is prime and its reverse (905314811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118413509 is a prime.

It is a super-2 number, since 2×118413509² = 28043518227386162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418413509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59206754 + 59206755.

It is an arithmetic number, because the mean of its divisors is an integer number (59206755).

Almost surely, 2^118413509 is an apocalyptic number.

It is an amenable number.

118413509 is a deficient number, since it is larger than the sum of its proper divisors (1).

118413509 is an equidigital number, since it uses as much as digits as its factorization.

118413509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 118413509 is about 10881.7971401786. The cubic root of 118413509 is about 491.0590850620.

The spelling of 118413509 in words is "one hundred eighteen million, four hundred thirteen thousand, five hundred nine".