19019149 has 2 divisors, whose sum is σ = 19019150. Its totient is φ = 19019148.

The previous prime is 19019093. The next prime is 19019153. The reversal of 19019149 is 94191091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13089924 + 5929225 = 3618^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 19019149 - 2¹⁵ = 18986381 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19019179) 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, 9509574 + 9509575.

It is an arithmetic number, because the mean of its divisors is an integer number (9509575).

Almost surely, 2^19019149 is an apocalyptic number.

It is an amenable number.

19019149 is a deficient number, since it is larger than the sum of its proper divisors (1).

19019149 is an equidigital number, since it uses as much as digits as its factorization.

19019149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 19019149 is about 4361.0949313217. The cubic root of 19019149 is about 266.9297790245.

The spelling of 19019149 in words is "nineteen million, nineteen thousand, one hundred forty-nine".