18080936 has 16 divisors (see below), whose sum is σ = 34995840. Its totient is φ = 8748720.

The previous prime is 18080903. The next prime is 18080939. The reversal of 18080936 is 63908081.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18080896 and 18080905.

It is not an unprimeable number, because it can be changed into a prime (18080939) 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, 36206 + ... + 36701.

It is an arithmetic number, because the mean of its divisors is an integer number (2187240).

Almost surely, 2^18080936 is an apocalyptic number.

It is an amenable number.

18080936 is a deficient number, since it is larger than the sum of its proper divisors (16914904).

18080936 is a wasteful number, since it uses less digits than its factorization.

18080936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72944 (or 72940 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18080936 is about 4252.1683880110. The cubic root of 18080936 is about 262.4663527546.

The spelling of 18080936 in words is "eighteen million, eighty thousand, nine hundred thirty-six".