18475616 has 12 divisors (see below), whose sum is σ = 36373932. Its totient is φ = 9237792.

The previous prime is 18475607. The next prime is 18475631. The reversal of 18475616 is 61657481.

It is a self number, because there is not a number n which added to its sum of digits gives 18475616.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 288650 + ... + 288713.

It is an arithmetic number, because the mean of its divisors is an integer number (3031161).

Almost surely, 2^18475616 is an apocalyptic number.

18475616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18475616 is a deficient number, since it is larger than the sum of its proper divisors (17898316).

18475616 is an equidigital number, since it uses as much as digits as its factorization.

18475616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577373 (or 577365 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 18475616 is about 4298.3271164489. The cubic root of 18475616 is about 264.3623735044.

It can be divided in two parts, 184756 and 16, that multiplied together give a triangular number (2956096 = T₂₄₃₁).

The spelling of 18475616 in words is "eighteen million, four hundred seventy-five thousand, six hundred sixteen".