19109413 has 2 divisors, whose sum is σ = 19109414. Its totient is φ = 19109412.

The previous prime is 19109381. The next prime is 19109417. The reversal of 19109413 is 31490191.

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., 19027044 + 82369 = 4362^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 19109413 - 2⁵ = 19109381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19109417) 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, 9554706 + 9554707.

It is an arithmetic number, because the mean of its divisors is an integer number (9554707).

Almost surely, 2^19109413 is an apocalyptic number.

It is an amenable number.

19109413 is a deficient number, since it is larger than the sum of its proper divisors (1).

19109413 is an equidigital number, since it uses as much as digits as its factorization.

19109413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 19109413 is about 4371.4314589159. The cubic root of 19109413 is about 267.3513915299.

The spelling of 19109413 in words is "nineteen million, one hundred nine thousand, four hundred thirteen".