18436982 has 16 divisors (see below), whose sum is σ = 28749600. Its totient is φ = 8856960.

The previous prime is 18436937. The next prime is 18436987. The reversal of 18436982 is 28963481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18436987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13319 + ... + 14637.

It is an arithmetic number, because the mean of its divisors is an integer number (1796850).

Almost surely, 2^18436982 is an apocalyptic number.

18436982 is a deficient number, since it is larger than the sum of its proper divisors (10312618).

18436982 is a wasteful number, since it uses less digits than its factorization.

18436982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591.

The product of its digits is 82944, while the sum is 41.

The square root of 18436982 is about 4293.8306906537. The cubic root of 18436982 is about 264.1779772490.

The spelling of 18436982 in words is "eighteen million, four hundred thirty-six thousand, nine hundred eighty-two".