5918908609 has 2 divisors, whose sum is σ = 5918908610. Its totient is φ = 5918908608.

The previous prime is 5918908603. The next prime is 5918908627. The reversal of 5918908609 is 9068098195.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5913148609 + 5760000 = 76897^2 + 2400^2 .

It is a cyclic number.

It is not a de Polignac number, because 5918908609 - 2⁹ = 5918908097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5918908609.

It is not a weakly prime, because it can be changed into another prime (5918908603) 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, 2959454304 + 2959454305.

It is an arithmetic number, because the mean of its divisors is an integer number (2959454305).

Almost surely, 2^5918908609 is an apocalyptic number.

It is an amenable number.

5918908609 is a deficient number, since it is larger than the sum of its proper divisors (1).

5918908609 is an equidigital number, since it uses as much as digits as its factorization.

5918908609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The square root of 5918908609 is about 76934.4435802326. The cubic root of 5918908609 is about 1808.8971649349.

The spelling of 5918908609 in words is "five billion, nine hundred eighteen million, nine hundred eight thousand, six hundred nine".