18983408 has 20 divisors (see below), whose sum is σ = 37967808. Its totient is φ = 9185280.

The previous prime is 18983401. The next prime is 18983417. The reversal of 18983408 is 80438981.

18983408 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18983401) 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, 18641 + ... + 19632.

Almost surely, 2^18983408 is an apocalyptic number.

It is an amenable number.

18983408 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18983408 is a wasteful number, since it uses less digits than its factorization.

18983408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38312 (or 38306 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 18983408 is about 4356.9952949252. The cubic root of 18983408 is about 266.7624683563.

Adding to 18983408 its sum of digits (41), we get a square (18983449 = 4357²).

It can be divided in two parts, 18983 and 408, that added together give a palindrome (19391).

The spelling of 18983408 in words is "eighteen million, nine hundred eighty-three thousand, four hundred eight".