19068997 has 2 divisors, whose sum is σ = 19068998. Its totient is φ = 19068996.

The previous prime is 19068991. The next prime is 19069007. The reversal of 19068997 is 79986091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12173121 + 6895876 = 3489^2 + 2626^2 .

It is a cyclic number.

It is not a de Polignac number, because 19068997 - 2⁷ = 19068869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19068997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19068991) 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, 9534498 + 9534499.

It is an arithmetic number, because the mean of its divisors is an integer number (9534499).

Almost surely, 2^19068997 is an apocalyptic number.

It is an amenable number.

19068997 is a deficient number, since it is larger than the sum of its proper divisors (1).

19068997 is an equidigital number, since it uses as much as digits as its factorization.

19068997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 19068997 is about 4366.8062700331. The cubic root of 19068997 is about 267.1627776699.

The spelling of 19068997 in words is "nineteen million, sixty-eight thousand, nine hundred ninety-seven".