19010197 has 2 divisors, whose sum is σ = 19010198. Its totient is φ = 19010196.

The previous prime is 19010191. The next prime is 19010209. The reversal of 19010197 is 79101091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13293316 + 5716881 = 3646^2 + 2391^2 .

It is a cyclic number.

It is not a de Polignac number, because 19010197 - 2¹⁵ = 18977429 is a prime.

It is a super-2 number, since 2×19010197² = 722775179957618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19010191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9505098 + 9505099.

It is an arithmetic number, because the mean of its divisors is an integer number (9505099).

Almost surely, 2^19010197 is an apocalyptic number.

It is an amenable number.

19010197 is a deficient number, since it is larger than the sum of its proper divisors (1).

19010197 is an equidigital number, since it uses as much as digits as its factorization.

19010197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 19010197 is about 4360.0684627652. The cubic root of 19010197 is about 266.8878926360.

The spelling of 19010197 in words is "nineteen million, ten thousand, one hundred ninety-seven".