19148117 has 2 divisors, whose sum is σ = 19148118. Its totient is φ = 19148116.

The previous prime is 19148093. The next prime is 19148123. The reversal of 19148117 is 71184191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18054001 + 1094116 = 4249^2 + 1046^2 .

It is a cyclic number.

It is not a de Polignac number, because 19148117 - 2¹⁴ = 19131733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19148147) 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, 9574058 + 9574059.

It is an arithmetic number, because the mean of its divisors is an integer number (9574059).

Almost surely, 2^19148117 is an apocalyptic number.

It is an amenable number.

19148117 is a deficient number, since it is larger than the sum of its proper divisors (1).

19148117 is an equidigital number, since it uses as much as digits as its factorization.

19148117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 32.

The square root of 19148117 is about 4375.8561448018. The cubic root of 19148117 is about 267.5317666877.

The spelling of 19148117 in words is "nineteen million, one hundred forty-eight thousand, one hundred seventeen".