16912193 has 4 divisors (see below), whose sum is σ = 16957908. Its totient is φ = 16866480.

The previous prime is 16912187. The next prime is 16912277. The reversal of 16912193 is 39121961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39121961 = 401 ⋅97561.

It can be written as a sum of positive squares in 2 ways, for example, as 3125824 + 13786369 = 1768^2 + 3713^2 .

It is a cyclic number.

It is not a de Polignac number, because 16912193 - 2⁴ = 16912177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16912123) 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, 22298 + ... + 23043.

It is an arithmetic number, because the mean of its divisors is an integer number (4239477).

Almost surely, 2^16912193 is an apocalyptic number.

It is an amenable number.

16912193 is a deficient number, since it is larger than the sum of its proper divisors (45715).

16912193 is an equidigital number, since it uses as much as digits as its factorization.

16912193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45714.

The product of its digits is 2916, while the sum is 32.

The square root of 16912193 is about 4112.4436774259. The cubic root of 16912193 is about 256.6846956096.

The spelling of 16912193 in words is "sixteen million, nine hundred twelve thousand, one hundred ninety-three".