16040919 has 16 divisors (see below), whose sum is σ = 22256640. Its totient is φ = 10265280.

The previous prime is 16040917. The next prime is 16040923. The reversal of 16040919 is 91904061.

It is not a de Polignac number, because 16040919 - 2¹ = 16040917 is a prime.

It is a super-2 number, since 2×16040919² = 514622164729122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16040917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12112 + ... + 13370.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^16040919 is an apocalyptic number.

16040919 is a deficient number, since it is larger than the sum of its proper divisors (6215721).

16040919 is a wasteful number, since it uses less digits than its factorization.

16040919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 16040919 is about 4005.1116089318. Note that the first 3 decimals coincide. The cubic root of 16040919 is about 252.1988384059.

The spelling of 16040919 in words is "sixteen million, forty thousand, nine hundred nineteen".