16195089 has 4 divisors (see below), whose sum is σ = 21593456. Its totient is φ = 10796724.

The previous prime is 16195061. The next prime is 16195097. The reversal of 16195089 is 98059161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98059161 = 3 ⋅32686387.

It is not a de Polignac number, because 16195089 - 2⁸ = 16194833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16195009) 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 3 ways as a sum of consecutive naturals, for example, 2699179 + ... + 2699184.

It is an arithmetic number, because the mean of its divisors is an integer number (5398364).

Almost surely, 2^16195089 is an apocalyptic number.

It is an amenable number.

16195089 is a deficient number, since it is larger than the sum of its proper divisors (5398367).

16195089 is an equidigital number, since it uses as much as digits as its factorization.

16195089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398366.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 16195089 is about 4024.3122393771. The cubic root of 16195089 is about 253.0042285014.

The spelling of 16195089 in words is "sixteen million, one hundred ninety-five thousand, eighty-nine".