16190997 has 8 divisors (see below), whose sum is σ = 21621600. Its totient is φ = 10777200.

The previous prime is 16190981. The next prime is 16191001. The reversal of 16190997 is 79909161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16190997 - 2⁴ = 16190981 is a prime.

It is a super-3 number, since 3×16190997³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16190947) 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, 1747 + ... + 5952.

It is an arithmetic number, because the mean of its divisors is an integer number (2702700).

Almost surely, 2^16190997 is an apocalyptic number.

It is an amenable number.

16190997 is a deficient number, since it is larger than the sum of its proper divisors (5430603).

16190997 is an equidigital number, since it uses as much as digits as its factorization.

16190997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8403.

The product of its (nonzero) digits is 30618, while the sum is 42.

The square root of 16190997 is about 4023.8037974036. The cubic root of 16190997 is about 252.9829179153.

The spelling of 16190997 in words is "sixteen million, one hundred ninety thousand, nine hundred ninety-seven".