18149828 has 12 divisors (see below), whose sum is σ = 31965612. Its totient is φ = 9016800.

The previous prime is 18149821. The next prime is 18149837. The reversal of 18149828 is 82894181.

It can be written as a sum of positive squares in 2 ways, for example, as 13897984 + 4251844 = 3728^2 + 2062^2 .

It is not an unprimeable number, because it can be changed into a prime (18149821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13823 + ... + 15078.

It is an arithmetic number, because the mean of its divisors is an integer number (2663801).

Almost surely, 2^18149828 is an apocalyptic number.

It is an amenable number.

18149828 is a deficient number, since it is larger than the sum of its proper divisors (13815784).

18149828 is a wasteful number, since it uses less digits than its factorization.

18149828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29062 (or 29060 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 18149828 is about 4260.2614943217. The cubic root of 18149828 is about 262.7992801230.

The spelling of 18149828 in words is "eighteen million, one hundred forty-nine thousand, eight hundred twenty-eight".