9434431161 has 9 divisors (see below), whose sum is σ = 13627932591. Its totient is φ = 6289426512.

The previous prime is 9434431147. The next prime is 9434431189. The reversal of 9434431161 is 1611344349.

The square root of 9434431161 is 97131.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6133239225 + 3301191936 = 78315^2 + 57456^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 9434431161 - 2¹⁷ = 9434300089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9434431861) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 275205 + ... + 307581.

Almost surely, 2^9434431161 is an apocalyptic number.

9434431161 is the 97131-st square number.

9434431161 is the 48566-th centered octagonal number.

It is an amenable number.

9434431161 is a deficient number, since it is larger than the sum of its proper divisors (4193501430).

9434431161 is an frugal number, since it uses more digits than its factorization.

9434431161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64760 (or 32380 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The cubic root of 9434431161 is about 2113.0279416509.

Multiplying 9434431161 by its sum of digits (36), we get a square (339639521796 = 582786²).

The spelling of 9434431161 in words is "nine billion, four hundred thirty-four million, four hundred thirty-one thousand, one hundred sixty-one".