16812443 has 2 divisors, whose sum is σ = 16812444. Its totient is φ = 16812442.

The previous prime is 16812437. The next prime is 16812451. The reversal of 16812443 is 34421861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16812443 - 2¹² = 16808347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16812403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8406221 + 8406222.

It is an arithmetic number, because the mean of its divisors is an integer number (8406222).

Almost surely, 2^16812443 is an apocalyptic number.

16812443 is a deficient number, since it is larger than the sum of its proper divisors (1).

16812443 is an equidigital number, since it uses as much as digits as its factorization.

16812443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 16812443 is about 4100.2979160056. The cubic root of 16812443 is about 256.1790485302.

The spelling of 16812443 in words is "sixteen million, eight hundred twelve thousand, four hundred forty-three".