1185845 has 6 divisors (see below), whose sum is σ = 1425942. Its totient is φ = 946728.

The previous prime is 1185827. The next prime is 1185851. The reversal of 1185845 is 5485811.

It can be written as a sum of positive squares in only one way, i.e., 948676 + 237169 = 974^2 + 487^2 .

It is not a de Polignac number, because 1185845 - 2⁸ = 1185589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2192 + ... + 2678.

It is an arithmetic number, because the mean of its divisors is an integer number (237657).

2^1185845 is an apocalyptic number.

It is an amenable number.

1185845 is a deficient number, since it is larger than the sum of its proper divisors (240097).

1185845 is an frugal number, since it uses more digits than its factorization.

1185845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 492 counting only the distinct ones).

The product of its digits is 6400, while the sum is 32.

The square root of 1185845 is about 1088.9651050424. The cubic root of 1185845 is about 105.8463717308.

The spelling of 1185845 in words is "one million, one hundred eighty-five thousand, eight hundred forty-five".