9147161844 has 60 divisors (see below), whose sum is σ = 24131961700. Its totient is φ = 3021069312.

The previous prime is 9147161843. The next prime is 9147161873. The reversal of 9147161844 is 4481617419.

It can be written as a sum of positive squares in 2 ways, for example, as 4842489744 + 4304672100 = 69588^2 + 65610^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9147161844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9147161843) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 94189 + ... + 164820.

Almost surely, 2^9147161844 is an apocalyptic number.

It is an amenable number.

9147161844 is an abundant number, since it is smaller than the sum of its proper divisors (14984799856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9147161844 is a wasteful number, since it uses less digits than its factorization.

9147161844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259134 (or 259123 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 9147161844 is about 95640.7959188965. The cubic root of 9147161844 is about 2091.3599540057.

The spelling of 9147161844 in words is "nine billion, one hundred forty-seven million, one hundred sixty-one thousand, eight hundred forty-four".