3018656489 has 4 divisors (see below), whose sum is σ = 3025471056. Its totient is φ = 3011841924.

The previous prime is 3018656477. The next prime is 3018656491. The reversal of 3018656489 is 9846568103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3018656489 is a prime.

It is a super-2 number, since 2×3018656489² = 18224573997163614242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3018656789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406619 + ... + 3407504.

It is an arithmetic number, because the mean of its divisors is an integer number (756367764).

Almost surely, 2^3018656489 is an apocalyptic number.

It is an amenable number.

3018656489 is a deficient number, since it is larger than the sum of its proper divisors (6814567).

3018656489 is an equidigital number, since it uses as much as digits as its factorization.

3018656489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814566.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 3018656489 is about 54942.3014534339. The cubic root of 3018656489 is about 1445.2330956209.

The spelling of 3018656489 in words is "three billion, eighteen million, six hundred fifty-six thousand, four hundred eighty-nine".