1878144065793 has 12 divisors (see below), whose sum is σ = 2712902724480. Its totient is φ = 1252083137976.

The previous prime is 1878144065783. The next prime is 1878144065801. The reversal of 1878144065793 is 3975604418781.

1878144065793 is a `hidden beast` number, since 1 + 8 + 7 + 8 + 14 + 40 + 6 + 579 + 3 = 666.

It is not a de Polignac number, because 1878144065793 - 2⁵ = 1878144065761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1878144065793.

It is not an unprimeable number, because it can be changed into a prime (1878144065783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108021 + ... + 1941122.

It is an arithmetic number, because the mean of its divisors is an integer number (226075227040).

Almost surely, 2^{1878144065793} is an apocalyptic number.

It is an amenable number.

1878144065793 is a deficient number, since it is larger than the sum of its proper divisors (834758658687).

1878144065793 is a wasteful number, since it uses less digits than its factorization.

1878144065793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150988 (or 2150985 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 1878144065793 in words is "one trillion, eight hundred seventy-eight billion, one hundred forty-four million, sixty-five thousand, seven hundred ninety-three".