18033607828 has 6 divisors (see below), whose sum is σ = 31558813706. Its totient is φ = 9016803912.

The previous prime is 18033607811. The next prime is 18033607829. The reversal of 18033607828 is 82870633081.

It can be written as a sum of positive squares in only one way, i.e., 13145081104 + 4888526724 = 114652^2 + 69918^2 .

It is a super-2 number, since 2×18033607828² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18033607829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2254200975 + ... + 2254200982.

Almost surely, 2^18033607828 is an apocalyptic number.

It is an amenable number.

18033607828 is a deficient number, since it is larger than the sum of its proper divisors (13525205878).

18033607828 is a wasteful number, since it uses less digits than its factorization.

18033607828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508401961 (or 4508401959 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 18033607828 in words is "eighteen billion, thirty-three million, six hundred seven thousand, eight hundred twenty-eight".