8434318385 has 32 divisors (see below), whose sum is σ = 10983444480. Its totient is φ = 6198438400.

The previous prime is 8434318379. The next prime is 8434318421. The reversal of 8434318385 is 5838134348.

It is not a de Polignac number, because 8434318385 - 2¹⁰ = 8434317361 is a prime.

It is a super-2 number, since 2×8434318385² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630365 + ... + 643605.

It is an arithmetic number, because the mean of its divisors is an integer number (343232640).

Almost surely, 2^8434318385 is an apocalyptic number.

It is an amenable number.

8434318385 is a deficient number, since it is larger than the sum of its proper divisors (2549126095).

8434318385 is a wasteful number, since it uses less digits than its factorization.

8434318385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13489.

The product of its digits is 1105920, while the sum is 47.

The square root of 8434318385 is about 91838.5452029811. The cubic root of 8434318385 is about 2035.5572919262.

The spelling of 8434318385 in words is "eight billion, four hundred thirty-four million, three hundred eighteen thousand, three hundred eighty-five".