18180476 has 12 divisors (see below), whose sum is σ = 31912608. Its totient is φ = 9062592.

The previous prime is 18180469. The next prime is 18180479. The reversal of 18180476 is 67408181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18180479) 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 in 3 ways as a sum of consecutive naturals, for example, 5396 + ... + 8091.

It is an arithmetic number, because the mean of its divisors is an integer number (2659384).

Almost surely, 2^18180476 is an apocalyptic number.

It is an amenable number.

18180476 is a deficient number, since it is larger than the sum of its proper divisors (13732132).

18180476 is a wasteful number, since it uses less digits than its factorization.

18180476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13828 (or 13826 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 18180476 is about 4263.8569394388. The cubic root of 18180476 is about 262.9471188624.

The spelling of 18180476 in words is "eighteen million, one hundred eighty thousand, four hundred seventy-six".