19113361 has 2 divisors, whose sum is σ = 19113362. Its totient is φ = 19113360.

The previous prime is 19113343. The next prime is 19113377. The reversal of 19113361 is 16331191.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17472400 + 1640961 = 4180^2 + 1281^2 .

It is an emirp because it is prime and its reverse (16331191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19113361 - 2¹³ = 19105169 is a prime.

It is not a weakly prime, because it can be changed into another prime (19113331) 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, 9556680 + 9556681.

It is an arithmetic number, because the mean of its divisors is an integer number (9556681).

Almost surely, 2^19113361 is an apocalyptic number.

It is an amenable number.

19113361 is a deficient number, since it is larger than the sum of its proper divisors (1).

19113361 is an equidigital number, since it uses as much as digits as its factorization.

19113361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 25.

The square root of 19113361 is about 4371.8830039241. The cubic root of 19113361 is about 267.3698018392.

The spelling of 19113361 in words is "nineteen million, one hundred thirteen thousand, three hundred sixty-one".