11181798 has 24 divisors (see below), whose sum is σ = 24640200. Its totient is φ = 3663744.

The previous prime is 11181787. The next prime is 11181827. The reversal of 11181798 is 89718111.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4203 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (1026675).

Almost surely, 2^11181798 is an apocalyptic number.

11181798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11181798 is an abundant number, since it is smaller than the sum of its proper divisors (13458402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11181798 is a wasteful number, since it uses less digits than its factorization.

11181798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10596 (or 10593 counting only the distinct ones).

The product of its digits is 4032, while the sum is 36.

The square root of 11181798 is about 3343.9195564487. The cubic root of 11181798 is about 223.6165180774.

It can be divided in two parts, 1118 and 1798, that added together give a square (2916 = 54²).

The spelling of 11181798 in words is "eleven million, one hundred eighty-one thousand, seven hundred ninety-eight".