16545419 has 6 divisors (see below), whose sum is σ = 18186420. Its totient is φ = 15041180.

The previous prime is 16545379. The next prime is 16545421. The reversal of 16545419 is 91454561.

It is a de Polignac number, because none of the positive numbers 2^k-16545419 is a prime.

It is a super-2 number, since 2×16545419² = 547501779771122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16545619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68249 + ... + 68490.

It is an arithmetic number, because the mean of its divisors is an integer number (3031070).

Almost surely, 2^16545419 is an apocalyptic number.

16545419 is a deficient number, since it is larger than the sum of its proper divisors (1641001).

16545419 is a wasteful number, since it uses less digits than its factorization.

16545419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136761 (or 136750 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 16545419 is about 4067.6060527047. The cubic root of 16545419 is about 254.8155477584.

The spelling of 16545419 in words is "sixteen million, five hundred forty-five thousand, four hundred nineteen".