16904541 has 4 divisors (see below), whose sum is σ = 22539392. Its totient is φ = 11269692.

The previous prime is 16904539. The next prime is 16904557. The reversal of 16904541 is 14540961.

It is a happy number.

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: 14540961 = 3 ⋅4846987.

It is not a de Polignac number, because 16904541 - 2¹ = 16904539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16904499 and 16904508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16904521) 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, 2817421 + ... + 2817426.

It is an arithmetic number, because the mean of its divisors is an integer number (5634848).

Almost surely, 2^16904541 is an apocalyptic number.

It is an amenable number.

16904541 is a deficient number, since it is larger than the sum of its proper divisors (5634851).

16904541 is an equidigital number, since it uses as much as digits as its factorization.

16904541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634850.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 16904541 is about 4111.5132250791. The cubic root of 16904541 is about 256.6459770433.

The spelling of 16904541 in words is "sixteen million, nine hundred four thousand, five hundred forty-one".