18485856 has 36 divisors (see below), whose sum is σ = 52569972. Its totient is φ = 6161856.

The previous prime is 18485837. The next prime is 18485869. The reversal of 18485856 is 65858481.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31806 + ... + 32381.

It is an arithmetic number, because the mean of its divisors is an integer number (1460277).

Almost surely, 2^18485856 is an apocalyptic number.

18485856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18485856 is an abundant number, since it is smaller than the sum of its proper divisors (34084116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18485856 is a wasteful number, since it uses less digits than its factorization.

18485856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64203 (or 64192 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 18485856 is about 4299.5181125331. The cubic root of 18485856 is about 264.4112049070.

The spelling of 18485856 in words is "eighteen million, four hundred eighty-five thousand, eight hundred fifty-six".