1181822 has 8 divisors (see below), whose sum is σ = 1790256. Its totient is φ = 585072.

The previous prime is 1181777. The next prime is 1181839. The reversal of 1181822 is 2281811.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2663 + ... + 3074.

It is an arithmetic number, because the mean of its divisors is an integer number (223782).

2^1181822 is an apocalyptic number.

1181822 is a deficient number, since it is larger than the sum of its proper divisors (608434).

1181822 is a wasteful number, since it uses less digits than its factorization.

1181822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5842.

The product of its digits is 256, while the sum is 23.

The square root of 1181822 is about 1087.1163691160. The cubic root of 1181822 is about 105.7265408937.

The spelling of 1181822 in words is "one million, one hundred eighty-one thousand, eight hundred twenty-two".