1181798 has 4 divisors (see below), whose sum is σ = 1772700. Its totient is φ = 590898.

The previous prime is 1181777. The next prime is 1181839. The reversal of 1181798 is 8971811.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295448 + ... + 295451.

It is an arithmetic number, because the mean of its divisors is an integer number (443175).

2^1181798 is an apocalyptic number.

1181798 is a deficient number, since it is larger than the sum of its proper divisors (590902).

1181798 is an equidigital number, since it uses as much as digits as its factorization.

1181798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590901.

The product of its digits is 4032, while the sum is 35.

The square root of 1181798 is about 1087.1053306833. The cubic root of 1181798 is about 105.7258252039.

The spelling of 1181798 in words is "one million, one hundred eighty-one thousand, seven hundred ninety-eight".