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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10140961 = 1033 ⋅9817.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
It is a 2010-hyperperfect number.
Almost surely, 216904101 is an apocalyptic number.
It is an amenable number.
16904101 is an equidigital number, since it uses as much as digits as its factorization.
16904101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8410.
The square root of 16904101 is about 4111.4597164511. The cubic root of 16904101 is about 256.6437503199.
The spelling of 16904101 in words is "sixteen million, nine hundred four thousand, one hundred one".