3118542809 has 2 divisors, whose sum is σ = 3118542810. Its totient is φ = 3118542808.

The previous prime is 3118542799. The next prime is 3118542853. The reversal of 3118542809 is 9082458113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1896341209 + 1222201600 = 43547^2 + 34960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3118542809 is a prime.

It is a super-2 number, since 2×3118542809² = 19450618503131220962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3118542109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1559271404 + 1559271405.

It is an arithmetic number, because the mean of its divisors is an integer number (1559271405).

Almost surely, 2^3118542809 is an apocalyptic number.

It is an amenable number.

3118542809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3118542809 is an equidigital number, since it uses as much as digits as its factorization.

3118542809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 3118542809 is about 55843.9146998131. The cubic root of 3118542809 is about 1461.0011912109.

The spelling of 3118542809 in words is "three billion, one hundred eighteen million, five hundred forty-two thousand, eight hundred nine".