15928091 has 2 divisors, whose sum is σ = 15928092. Its totient is φ = 15928090.

The previous prime is 15928067. The next prime is 15928109. The reversal of 15928091 is 19082951.

Together with next prime (15928109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (19082951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15928091 - 2⁶ = 15928027 is a prime.

It is not a weakly prime, because it can be changed into another prime (15928001) 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, 7964045 + 7964046.

It is an arithmetic number, because the mean of its divisors is an integer number (7964046).

Almost surely, 2^15928091 is an apocalyptic number.

15928091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15928091 is an equidigital number, since it uses as much as digits as its factorization.

15928091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 15928091 is about 3991.0012528186. The cubic root of 15928091 is about 251.6061444356.

The spelling of 15928091 in words is "fifteen million, nine hundred twenty-eight thousand, ninety-one".