11181930 has 32 divisors (see below), whose sum is σ = 27494208. Its totient is φ = 2908800.

The previous prime is 11181923. The next prime is 11181931. The reversal of 11181930 is 3918111.

It is a self number, because there is not a number n which added to its sum of digits gives 11181930.

It is not an unprimeable number, because it can be changed into a prime (11181931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3316 + ... + 5775.

It is an arithmetic number, because the mean of its divisors is an integer number (859194).

Almost surely, 2^11181930 is an apocalyptic number.

11181930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11181930 is an abundant number, since it is smaller than the sum of its proper divisors (16312278).

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

11181930 is a wasteful number, since it uses less digits than its factorization.

11181930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 11181930 is about 3343.9392937073. The cubic root of 11181930 is about 223.6173979975.

The spelling of 11181930 in words is "eleven million, one hundred eighty-one thousand, nine hundred thirty".