16180091 has 2 divisors, whose sum is σ = 16180092. Its totient is φ = 16180090.

The previous prime is 16180037. The next prime is 16180121. The reversal of 16180091 is 19008161.

It is a strong prime.

It is an emirp because it is prime and its reverse (19008161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16180091 - 2⁶ = 16180027 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16180091.

It is not a weakly prime, because it can be changed into another prime (16180291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8090045 + 8090046.

It is an arithmetic number, because the mean of its divisors is an integer number (8090046).

Almost surely, 2^16180091 is an apocalyptic number.

16180091 is a deficient number, since it is larger than the sum of its proper divisors (1).

16180091 is an equidigital number, since it uses as much as digits as its factorization.

16180091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 16180091 is about 4022.4483837583. The cubic root of 16180091 is about 252.9261033903.

The spelling of 16180091 in words is "sixteen million, one hundred eighty thousand, ninety-one".