19208149 has 2 divisors, whose sum is σ = 19208150. Its totient is φ = 19208148.

The previous prime is 19208141. The next prime is 19208153. The reversal of 19208149 is 94180291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14976900 + 4231249 = 3870^2 + 2057^2 .

It is an emirp because it is prime and its reverse (94180291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19208149 - 2³ = 19208141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19208141) 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, 9604074 + 9604075.

It is an arithmetic number, because the mean of its divisors is an integer number (9604075).

Almost surely, 2^19208149 is an apocalyptic number.

It is an amenable number.

19208149 is a deficient number, since it is larger than the sum of its proper divisors (1).

19208149 is an equidigital number, since it uses as much as digits as its factorization.

19208149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 19208149 is about 4382.7102345467. The cubic root of 19208149 is about 267.8110580712.

The spelling of 19208149 in words is "nineteen million, two hundred eight thousand, one hundred forty-nine".