16078891 has 2 divisors, whose sum is σ = 16078892. Its totient is φ = 16078890.

The previous prime is 16078877. The next prime is 16078903. The reversal of 16078891 is 19887061.

It is a strong prime.

It is an emirp because it is prime and its reverse (19887061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16078891 - 2⁷ = 16078763 is a prime.

It is not a weakly prime, because it can be changed into another prime (16078871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8039445 + 8039446.

It is an arithmetic number, because the mean of its divisors is an integer number (8039446).

Almost surely, 2^16078891 is an apocalyptic number.

16078891 is a deficient number, since it is larger than the sum of its proper divisors (1).

16078891 is an equidigital number, since it uses as much as digits as its factorization.

16078891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16078891 is about 4009.8492490367. The cubic root of 16078891 is about 252.3976829512.

The spelling of 16078891 in words is "sixteen million, seventy-eight thousand, eight hundred ninety-one".