16546394 has 4 divisors (see below), whose sum is σ = 24819594. Its totient is φ = 8273196.

The previous prime is 16546393. The next prime is 16546403. The reversal of 16546394 is 49364561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49364561 = 97 ⋅508913.

It can be written as a sum of positive squares in only one way, i.e., 16104169 + 442225 = 4013^2 + 665^2 .

It is a super-3 number, since 3×16546394³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16546393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4136597 + ... + 4136600.

Almost surely, 2^16546394 is an apocalyptic number.

16546394 is a deficient number, since it is larger than the sum of its proper divisors (8273200).

16546394 is an equidigital number, since it uses as much as digits as its factorization.

16546394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273199.

The product of its digits is 77760, while the sum is 38.

The square root of 16546394 is about 4067.7259003035. The cubic root of 16546394 is about 254.8205529762.

The spelling of 16546394 in words is "sixteen million, five hundred forty-six thousand, three hundred ninety-four".