3018645493 has 2 divisors, whose sum is σ = 3018645494. Its totient is φ = 3018645492.

The previous prime is 3018645457. The next prime is 3018645571. The reversal of 3018645493 is 3945468103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2273191684 + 745453809 = 47678^2 + 27303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3018645493 is a prime.

It is a super-2 number, since 2×3018645493² = 18224441224818426098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3018645433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1509322746 + 1509322747.

It is an arithmetic number, because the mean of its divisors is an integer number (1509322747).

Almost surely, 2^3018645493 is an apocalyptic number.

It is an amenable number.

3018645493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3018645493 is an equidigital number, since it uses as much as digits as its factorization.

3018645493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 3018645493 is about 54942.2013847279. The cubic root of 3018645493 is about 1445.2313407781.

The spelling of 3018645493 in words is "three billion, eighteen million, six hundred forty-five thousand, four hundred ninety-three".