19000073 has 2 divisors, whose sum is σ = 19000074. Its totient is φ = 19000072.

The previous prime is 19000043. The next prime is 19000087. The reversal of 19000073 is 37000091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11002489 + 7997584 = 3317^2 + 2828^2 .

It is a cyclic number.

It is not a de Polignac number, because 19000073 - 2¹⁴ = 18983689 is a prime.

It is a super-2 number, since 2×19000073² = 722005548010658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19000013) 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, 9500036 + 9500037.

It is an arithmetic number, because the mean of its divisors is an integer number (9500037).

Almost surely, 2^19000073 is an apocalyptic number.

It is an amenable number.

19000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

19000073 is an equidigital number, since it uses as much as digits as its factorization.

19000073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 19000073 is about 4358.9073172069. The cubic root of 19000073 is about 266.8405066144.

The spelling of 19000073 in words is "nineteen million, seventy-three", and thus it is an aban number and an uban number.