19080991 has 2 divisors, whose sum is σ = 19080992. Its totient is φ = 19080990.

The previous prime is 19080979. The next prime is 19081003. The reversal of 19080991 is 19908091.

It is a balanced prime because it is at equal distance from previous prime (19080979) and next prime (19081003).

It is a cyclic number.

It is not a de Polignac number, because 19080991 - 2¹³ = 19072799 is a 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 19080991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19080911) 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, 9540495 + 9540496.

It is an arithmetic number, because the mean of its divisors is an integer number (9540496).

Almost surely, 2^19080991 is an apocalyptic number.

19080991 is a deficient number, since it is larger than the sum of its proper divisors (1).

19080991 is an equidigital number, since it uses as much as digits as its factorization.

19080991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 19080991 is about 4368.1793690278. The cubic root of 19080991 is about 267.2187791955.

The spelling of 19080991 in words is "nineteen million, eighty thousand, nine hundred ninety-one".