18820492982 has 4 divisors (see below), whose sum is σ = 28230739476. Its totient is φ = 9410246490.

The previous prime is 18820492963. The next prime is 18820493009. The reversal of 18820492982 is 28929402881.

It is a happy number.

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

It is a super-2 number, since 2×18820492982² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4705123244 + ... + 4705123247.

It is an arithmetic number, because the mean of its divisors is an integer number (7057684869).

Almost surely, 2^18820492982 is an apocalyptic number.

18820492982 is a deficient number, since it is larger than the sum of its proper divisors (9410246494).

18820492982 is an equidigital number, since it uses as much as digits as its factorization.

18820492982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9410246493.

The product of its (nonzero) digits is 1327104, while the sum is 53.

The spelling of 18820492982 in words is "eighteen billion, eight hundred twenty million, four hundred ninety-two thousand, nine hundred eighty-two".