9315218489 has 4 divisors (see below), whose sum is σ = 9615709440. Its totient is φ = 9014727540.

The previous prime is 9315218449. The next prime is 9315218543. The reversal of 9315218489 is 9848125139.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9848125139 = 60497 ⋅162787.

It is a cyclic number.

It is not a de Polignac number, because 9315218489 - 2⁸ = 9315218233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9315218449) 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, 150245429 + ... + 150245490.

It is an arithmetic number, because the mean of its divisors is an integer number (2403927360).

Almost surely, 2^9315218489 is an apocalyptic number.

It is an amenable number.

9315218489 is a deficient number, since it is larger than the sum of its proper divisors (300490951).

9315218489 is a wasteful number, since it uses less digits than its factorization.

9315218489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300490950.

The product of its digits is 622080, while the sum is 50.

The square root of 9315218489 is about 96515.3795464744. The cubic root of 9315218489 is about 2104.0901756983.

The spelling of 9315218489 in words is "nine billion, three hundred fifteen million, two hundred eighteen thousand, four hundred eighty-nine".