18808982 has 4 divisors (see below), whose sum is σ = 28213476. Its totient is φ = 9404490.

The previous prime is 18808973. The next prime is 18808991. The reversal of 18808982 is 28980881.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (18808973) and next prime (18808991).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4702244 + ... + 4702247.

It is an arithmetic number, because the mean of its divisors is an integer number (7053369).

Almost surely, 2^18808982 is an apocalyptic number.

18808982 is a deficient number, since it is larger than the sum of its proper divisors (9404494).

18808982 is an equidigital number, since it uses as much as digits as its factorization.

18808982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9404493.

The product of its (nonzero) digits is 73728, while the sum is 44.

The square root of 18808982 is about 4336.9323259650. The cubic root of 18808982 is about 265.9429183864.

The spelling of 18808982 in words is "eighteen million, eight hundred eight thousand, nine hundred eighty-two".