16883891 has 4 divisors (see below), whose sum is σ = 16893384. Its totient is φ = 16874400.

The previous prime is 16883869. The next prime is 16883897. The reversal of 16883891 is 19838861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19838861 = 7 ⋅2834123.

It is a cyclic number.

It is not a de Polignac number, because 16883891 - 2¹⁰ = 16882867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16883897) 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, 1190 + ... + 5931.

It is an arithmetic number, because the mean of its divisors is an integer number (4223346).

Almost surely, 2^16883891 is an apocalyptic number.

16883891 is a deficient number, since it is larger than the sum of its proper divisors (9493).

16883891 is an equidigital number, since it uses as much as digits as its factorization.

16883891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9492.

The product of its digits is 82944, while the sum is 44.

The square root of 16883891 is about 4109.0012168409. The cubic root of 16883891 is about 256.5414311921.

The spelling of 16883891 in words is "sixteen million, eight hundred eighty-three thousand, eight hundred ninety-one".