16543139 has 8 divisors (see below), whose sum is σ = 16984032. Its totient is φ = 16107840.

The previous prime is 16543117. The next prime is 16543151. The reversal of 16543139 is 93134561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16543139 - 2¹⁶ = 16477603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16543169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4967 + ... + 7599.

It is an arithmetic number, because the mean of its divisors is an integer number (2123004).

Almost surely, 2^16543139 is an apocalyptic number.

16543139 is a deficient number, since it is larger than the sum of its proper divisors (440893).

16543139 is a wasteful number, since it uses less digits than its factorization.

16543139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797.

The product of its digits is 9720, while the sum is 32.

The square root of 16543139 is about 4067.3257799198. The cubic root of 16543139 is about 254.8038424814.

The spelling of 16543139 in words is "sixteen million, five hundred forty-three thousand, one hundred thirty-nine".