9180145 has 8 divisors (see below), whose sum is σ = 11863656. Its totient is φ = 6779136.

The previous prime is 9180137. The next prime is 9180161. The reversal of 9180145 is 5410819.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41616 + 9138529 = 204^2 + 3023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9180145 - 2³ = 9180137 is a prime.

It is a super-4 number, since 4×9180145⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70552 + ... + 70681.

It is an arithmetic number, because the mean of its divisors is an integer number (1482957).

Almost surely, 2^9180145 is an apocalyptic number.

It is an amenable number.

9180145 is a deficient number, since it is larger than the sum of its proper divisors (2683511).

9180145 is a wasteful number, since it uses less digits than its factorization.

9180145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141251.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 9180145 is about 3029.8754099798. The cubic root of 9180145 is about 209.3870638330.

The spelling of 9180145 in words is "nine million, one hundred eighty thousand, one hundred forty-five".