1185145 has 8 divisors (see below), whose sum is σ = 1531656. Its totient is φ = 875136.

The previous prime is 1185131. The next prime is 1185179. The reversal of 1185145 is 5415811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44521 + 1140624 = 211^2 + 1068^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1185145 - 2⁵ = 1185113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9052 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (191457).

2^1185145 is an apocalyptic number.

It is an amenable number.

1185145 is a deficient number, since it is larger than the sum of its proper divisors (346511).

1185145 is a wasteful number, since it uses less digits than its factorization.

1185145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18251.

The product of its digits is 800, while the sum is 25.

The square root of 1185145 is about 1088.6436515224. The cubic root of 1185145 is about 105.8255407218.

The spelling of 1185145 in words is "one million, one hundred eighty-five thousand, one hundred forty-five".