19080857 has 2 divisors, whose sum is σ = 19080858. Its totient is φ = 19080856.

The previous prime is 19080847. The next prime is 19080871. The reversal of 19080857 is 75808091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11485321 + 7595536 = 3389^2 + 2756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19080857 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 19080857.

It is not a weakly prime, because it can be changed into another prime (19080827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9540428 + 9540429.

It is an arithmetic number, because the mean of its divisors is an integer number (9540429).

Almost surely, 2^19080857 is an apocalyptic number.

It is an amenable number.

19080857 is a deficient number, since it is larger than the sum of its proper divisors (1).

19080857 is an equidigital number, since it uses as much as digits as its factorization.

19080857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 19080857 is about 4368.1640308029. The cubic root of 19080857 is about 267.2181536619.

The spelling of 19080857 in words is "nineteen million, eighty thousand, eight hundred fifty-seven".