1940628447878 has 16 divisors (see below), whose sum is σ = 3064220358720. Its totient is φ = 919224000936.

The previous prime is 1940628447829. The next prime is 1940628447883. The reversal of 1940628447878 is 8787448260491.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1164125 + ... + 2288327.

It is an arithmetic number, because the mean of its divisors is an integer number (191513772420).

Almost surely, 2^{1940628447878} is an apocalyptic number.

1940628447878 is a deficient number, since it is larger than the sum of its proper divisors (1123591910842).

1940628447878 is a wasteful number, since it uses less digits than its factorization.

1940628447878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169651.

The product of its (nonzero) digits is 173408256, while the sum is 68.

The spelling of 1940628447878 in words is "one trillion, nine hundred forty billion, six hundred twenty-eight million, four hundred forty-seven thousand, eight hundred seventy-eight".