18478082 has 24 divisors (see below), whose sum is σ = 33657024. Its totient is φ = 7451712.

The previous prime is 18478081. The next prime is 18478093. The reversal of 18478082 is 28087481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18478081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1763 + ... + 6329.

It is an arithmetic number, because the mean of its divisors is an integer number (1402376).

Almost surely, 2^18478082 is an apocalyptic number.

18478082 is a deficient number, since it is larger than the sum of its proper divisors (15178942).

18478082 is a wasteful number, since it uses less digits than its factorization.

18478082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610 (or 4593 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 18478082 is about 4298.6139626628. The cubic root of 18478082 is about 264.3741347471.

The spelling of 18478082 in words is "eighteen million, four hundred seventy-eight thousand, eighty-two".