118456609 has 2 divisors, whose sum is σ = 118456610. Its totient is φ = 118456608.

The previous prime is 118456579. The next prime is 118456627. The reversal of 118456609 is 906654811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102576384 + 15880225 = 10128^2 + 3985^2 .

It is a cyclic number.

It is not a de Polignac number, because 118456609 - 2⁵ = 118456577 is a prime.

It is not a weakly prime, because it can be changed into another prime (118456649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59228304 + 59228305.

It is an arithmetic number, because the mean of its divisors is an integer number (59228305).

Almost surely, 2^118456609 is an apocalyptic number.

It is an amenable number.

118456609 is a deficient number, since it is larger than the sum of its proper divisors (1).

118456609 is an equidigital number, since it uses as much as digits as its factorization.

118456609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 118456609 is about 10883.7773314231. Note that the first 3 decimals coincide. The cubic root of 118456609 is about 491.1186561910.

The spelling of 118456609 in words is "one hundred eighteen million, four hundred fifty-six thousand, six hundred nine".