1918792891743 has 48 divisors (see below), whose sum is σ = 3245586785280. Its totient is φ = 999298931904.

The previous prime is 1918792891739. The next prime is 1918792891777. The reversal of 1918792891743 is 3471982978191.

It is not a de Polignac number, because 1918792891743 - 2² = 1918792891739 is a prime.

It is a super-3 number, since 3×1918792891743³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918792891733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6203955 + ... + 6505892.

It is an arithmetic number, because the mean of its divisors is an integer number (67616391360).

Almost surely, 2^{1918792891743} is an apocalyptic number.

1918792891743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1918792891743 is a deficient number, since it is larger than the sum of its proper divisors (1326793893537).

1918792891743 is a wasteful number, since it uses less digits than its factorization.

1918792891743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12709956 (or 12709949 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 69.

The spelling of 1918792891743 in words is "one trillion, nine hundred eighteen billion, seven hundred ninety-two million, eight hundred ninety-one thousand, seven hundred forty-three".