16468891 has 2 divisors, whose sum is σ = 16468892. Its totient is φ = 16468890.

The previous prime is 16468889. The next prime is 16468931. The reversal of 16468891 is 19886461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16468891 - 2¹ = 16468889 is a prime.

Together with 16468889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16468831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8234445 + 8234446.

It is an arithmetic number, because the mean of its divisors is an integer number (8234446).

Almost surely, 2^16468891 is an apocalyptic number.

16468891 is a deficient number, since it is larger than the sum of its proper divisors (1).

16468891 is an equidigital number, since it uses as much as digits as its factorization.

16468891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 16468891 is about 4058.1881425089. The cubic root of 16468891 is about 254.4220719332.

The spelling of 16468891 in words is "sixteen million, four hundred sixty-eight thousand, eight hundred ninety-one".