16813982 has 4 divisors (see below), whose sum is σ = 25220976. Its totient is φ = 8406990.

The previous prime is 16813963. The next prime is 16813987. The reversal of 16813982 is 28931861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16813987) 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 as a sum of consecutive naturals, namely, 4203494 + ... + 4203497.

It is an arithmetic number, because the mean of its divisors is an integer number (6305244).

Almost surely, 2^16813982 is an apocalyptic number.

16813982 is a deficient number, since it is larger than the sum of its proper divisors (8406994).

16813982 is an equidigital number, since it uses as much as digits as its factorization.

16813982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406993.

The product of its digits is 20736, while the sum is 38.

The square root of 16813982 is about 4100.4855810014. The cubic root of 16813982 is about 256.1868651124.

The spelling of 16813982 in words is "sixteen million, eight hundred thirteen thousand, nine hundred eighty-two".