16946081 has 4 divisors (see below), whose sum is σ = 17838000. Its totient is φ = 16054164.

The previous prime is 16946077. The next prime is 16946099. The reversal of 16946081 is 18064961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16946081 - 2² = 16946077 is a prime.

It is a super-2 number, since 2×16946081² = 574339322517122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16946021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445931 + ... + 445968.

It is an arithmetic number, because the mean of its divisors is an integer number (4459500).

Almost surely, 2^16946081 is an apocalyptic number.

It is an amenable number.

16946081 is a deficient number, since it is larger than the sum of its proper divisors (891919).

16946081 is an equidigital number, since it uses as much as digits as its factorization.

16946081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891918.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 16946081 is about 4116.5617935360. The cubic root of 16946081 is about 256.8560261894.

The spelling of 16946081 in words is "sixteen million, nine hundred forty-six thousand, eighty-one".