16748891 has 4 divisors (see below), whose sum is σ = 16766784. Its totient is φ = 16731000.

The previous prime is 16748867. The next prime is 16748903. The reversal of 16748891 is 19884761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16748891 - 2¹⁰ = 16747867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16748491) 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, 7460 + ... + 9441.

It is an arithmetic number, because the mean of its divisors is an integer number (4191696).

Almost surely, 2^16748891 is an apocalyptic number.

16748891 is a deficient number, since it is larger than the sum of its proper divisors (17893).

16748891 is an equidigital number, since it uses as much as digits as its factorization.

16748891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17892.

The product of its digits is 96768, while the sum is 44.

The square root of 16748891 is about 4092.5408977798. The cubic root of 16748891 is about 255.8558504468.

The spelling of 16748891 in words is "sixteen million, seven hundred forty-eight thousand, eight hundred ninety-one".