1919435923 has 2 divisors, whose sum is σ = 1919435924. Its totient is φ = 1919435922.

The previous prime is 1919435909. The next prime is 1919435953. The reversal of 1919435923 is 3295349191.

It is a weak prime.

It is an emirp because it is prime and its reverse (3295349191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1919435923 - 2⁵ = 1919435891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1919435953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959717961 + 959717962.

It is an arithmetic number, because the mean of its divisors is an integer number (959717962).

Almost surely, 2^1919435923 is an apocalyptic number.

1919435923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919435923 is an equidigital number, since it uses as much as digits as its factorization.

1919435923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 46.

The square root of 1919435923 is about 43811.3675089012. The cubic root of 1919435923 is about 1242.7712739050.

The spelling of 1919435923 in words is "one billion, nine hundred nineteen million, four hundred thirty-five thousand, nine hundred twenty-three".