1919227133 has 4 divisors (see below), whose sum is σ = 1921254720. Its totient is φ = 1917199548.

The previous prime is 1919227129. The next prime is 1919227147. The reversal of 1919227133 is 3317229191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1919227133 - 2² = 1919227129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919227103) 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, 1012373 + ... + 1014266.

It is an arithmetic number, because the mean of its divisors is an integer number (480313680).

Almost surely, 2^1919227133 is an apocalyptic number.

It is an amenable number.

1919227133 is a deficient number, since it is larger than the sum of its proper divisors (2027587).

1919227133 is an equidigital number, since it uses as much as digits as its factorization.

1919227133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027586.

The product of its digits is 20412, while the sum is 38.

The square root of 1919227133 is about 43808.9846150307. The cubic root of 1919227133 is about 1242.7262107313.

The spelling of 1919227133 in words is "one billion, nine hundred nineteen million, two hundred twenty-seven thousand, one hundred thirty-three".