1919847214919 has 2 divisors, whose sum is σ = 1919847214920. Its totient is φ = 1919847214918.

The previous prime is 1919847214903. The next prime is 1919847214927. The reversal of 1919847214919 is 9194127489191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1919847214919 - 2⁴ = 1919847214903 is a prime.

It is a super-2 number, since 2×1919847214919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1919847214969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959923607459 + 959923607460.

It is an arithmetic number, because the mean of its divisors is an integer number (959923607460).

Almost surely, 2^{1919847214919} is an apocalyptic number.

1919847214919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919847214919 is an equidigital number, since it uses as much as digits as its factorization.

1919847214919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 65.

The spelling of 1919847214919 in words is "one trillion, nine hundred nineteen billion, eight hundred forty-seven million, two hundred fourteen thousand, nine hundred nineteen".