19149073 has 2 divisors, whose sum is σ = 19149074. Its totient is φ = 19149072.

The previous prime is 19149037. The next prime is 19149079. The reversal of 19149073 is 37094191.

Together with previous prime (19149037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18386944 + 762129 = 4288^2 + 873^2 .

It is an emirp because it is prime and its reverse (37094191) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19149073 is a prime.

It is not a weakly prime, because it can be changed into another prime (19149079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9574536 + 9574537.

It is an arithmetic number, because the mean of its divisors is an integer number (9574537).

Almost surely, 2^19149073 is an apocalyptic number.

It is an amenable number.

19149073 is a deficient number, since it is larger than the sum of its proper divisors (1).

19149073 is an equidigital number, since it uses as much as digits as its factorization.

19149073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 19149073 is about 4375.9653792049. The cubic root of 19149073 is about 267.5362189290.

The spelling of 19149073 in words is "nineteen million, one hundred forty-nine thousand, seventy-three".