16041919 has 4 divisors (see below), whose sum is σ = 16109280. Its totient is φ = 15974560.

The previous prime is 16041889. The next prime is 16041929. The reversal of 16041919 is 91914061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91914061 = 5153 ⋅17837.

It is a cyclic number.

It is not a de Polignac number, because 16041919 - 2⁵ = 16041887 is a prime.

It is a super-2 number, since 2×16041919² = 514686330405122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16041929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33322 + ... + 33799.

It is an arithmetic number, because the mean of its divisors is an integer number (4027320).

Almost surely, 2^16041919 is an apocalyptic number.

16041919 is a deficient number, since it is larger than the sum of its proper divisors (67361).

16041919 is an equidigital number, since it uses as much as digits as its factorization.

16041919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67360.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 16041919 is about 4005.2364474523. The cubic root of 16041919 is about 252.2040790366.

The spelling of 16041919 in words is "sixteen million, forty-one thousand, nine hundred nineteen".