19135227 has 4 divisors (see below), whose sum is σ = 25513640. Its totient is φ = 12756816.

The previous prime is 19135211. The next prime is 19135229. The reversal of 19135227 is 72253191.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19135227 - 2⁴ = 19135211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19135194 and 19135203.

It is not an unprimeable number, because it can be changed into a prime (19135229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189202 + ... + 3189207.

It is an arithmetic number, because the mean of its divisors is an integer number (6378410).

Almost surely, 2^19135227 is an apocalyptic number.

19135227 is a deficient number, since it is larger than the sum of its proper divisors (6378413).

19135227 is an equidigital number, since it uses as much as digits as its factorization.

19135227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378412.

The product of its digits is 3780, while the sum is 30.

The square root of 19135227 is about 4374.3830422129. The cubic root of 19135227 is about 267.4717214699.

It can be divided in two parts, 1913 and 5227, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 19135227 in words is "nineteen million, one hundred thirty-five thousand, two hundred twenty-seven".