1916807427297 has 24 divisors (see below), whose sum is σ = 3231578078976. Its totient is φ = 1072013878656.

The previous prime is 1916807427289. The next prime is 1916807427317. The reversal of 1916807427297 is 7927247086191.

It is not a de Polignac number, because 1916807427297 - 2³ = 1916807427289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1916807427247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323672728 + ... + 323678649.

It is an arithmetic number, because the mean of its divisors is an integer number (134649086624).

Almost surely, 2^{1916807427297} is an apocalyptic number.

It is an amenable number.

1916807427297 is a deficient number, since it is larger than the sum of its proper divisors (1314770651679).

1916807427297 is a wasteful number, since it uses less digits than its factorization.

1916807427297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647351437 (or 647351434 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The spelling of 1916807427297 in words is "one trillion, nine hundred sixteen billion, eight hundred seven million, four hundred twenty-seven thousand, two hundred ninety-seven".