1131845 has 16 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 759360.

The previous prime is 1131839. The next prime is 1131857. The reversal of 1131845 is 5481311.

It is not a de Polignac number, because 1131845 - 2⁴ = 1131829 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (99792).

2^1131845 is an apocalyptic number.

It is an amenable number.

1131845 is a deficient number, since it is larger than the sum of its proper divisors (464827).

1131845 is a wasteful number, since it uses less digits than its factorization.

1131845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612.

The product of its digits is 480, while the sum is 23.

The square root of 1131845 is about 1063.8820423336. The cubic root of 1131845 is about 104.2147006913.

The spelling of 1131845 in words is "one million, one hundred thirty-one thousand, eight hundred forty-five".