1917693839404 has 12 divisors (see below), whose sum is σ = 3835387678864. Its totient is φ = 821868788304.

The previous prime is 1917693839377. The next prime is 1917693839459. The reversal of 1917693839404 is 4049383967191.

1917693839404 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34244532819 + ... + 34244532874.

Almost surely, 2^{1917693839404} is an apocalyptic number.

1917693839404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1917693839404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1917693839404 is a wasteful number, since it uses less digits than its factorization.

1917693839404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68489065704 (or 68489065702 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 64.

The spelling of 1917693839404 in words is "one trillion, nine hundred seventeen billion, six hundred ninety-three million, eight hundred thirty-nine thousand, four hundred four".