16041691 has 4 divisors (see below), whose sum is σ = 16093584. Its totient is φ = 15989800.

The previous prime is 16041673. The next prime is 16041713. The reversal of 16041691 is 19614061.

16041691 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19614061 = 19 ⋅1032319.

It is a cyclic number.

It is not a de Polignac number, because 16041691 - 2²³ = 7653083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16041631) 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, 25480 + ... + 26101.

It is an arithmetic number, because the mean of its divisors is an integer number (4023396).

Almost surely, 2^16041691 is an apocalyptic number.

16041691 is a deficient number, since it is larger than the sum of its proper divisors (51893).

16041691 is an equidigital number, since it uses as much as digits as its factorization.

16041691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51892.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 16041691 is about 4005.2079846120. The cubic root of 16041691 is about 252.2028841920.

The spelling of 16041691 in words is "sixteen million, forty-one thousand, six hundred ninety-one".