1919793449 has 8 divisors (see below), whose sum is σ = 2194519680. Its totient is φ = 1645184736.

The previous prime is 1919793431. The next prime is 1919793487. The reversal of 1919793449 is 9443979191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1919793449 - 2²⁴ = 1903016233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1919793394 and 1919793403.

It is not an unprimeable number, because it can be changed into a prime (1919793409) 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 7 ways as a sum of consecutive naturals, for example, 8972 + ... + 62610.

It is an arithmetic number, because the mean of its divisors is an integer number (274314960).

Almost surely, 2^1919793449 is an apocalyptic number.

It is an amenable number.

1919793449 is a deficient number, since it is larger than the sum of its proper divisors (274726231).

1919793449 is an equidigital number, since it uses as much as digits as its factorization.

1919793449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58759.

The product of its digits is 2204496, while the sum is 56.

The square root of 1919793449 is about 43815.4476069799. The cubic root of 1919793449 is about 1242.8484312012.

The spelling of 1919793449 in words is "one billion, nine hundred nineteen million, seven hundred ninety-three thousand, four hundred forty-nine".