19028161 has 2 divisors, whose sum is σ = 19028162. Its totient is φ = 19028160.

The previous prime is 19028159. The next prime is 19028189. The reversal of 19028161 is 16182091.

It is a happy number.

It is an a-pointer prime, because the next prime (19028189) can be obtained adding 19028161 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 3779136 = 3905^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 19028161 - 2¹ = 19028159 is a prime.

It is a super-2 number, since 2×19028161² = 724141822083842, which contains 22 as substring.

Together with 19028159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19022161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9514080 + 9514081.

It is an arithmetic number, because the mean of its divisors is an integer number (9514081).

Almost surely, 2^19028161 is an apocalyptic number.

It is an amenable number.

19028161 is a deficient number, since it is larger than the sum of its proper divisors (1).

19028161 is an equidigital number, since it uses as much as digits as its factorization.

19028161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 19028161 is about 4362.1280357183. The cubic root of 19028161 is about 266.9719328790.

The spelling of 19028161 in words is "nineteen million, twenty-eight thousand, one hundred sixty-one".