1993955805896 has 32 divisors (see below), whose sum is σ = 3776721586560. Its totient is φ = 986839059072.

The previous prime is 1993955805883. The next prime is 1993955805931. The reversal of 1993955805896 is 6985085593991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212101 + ... + 2336043.

It is an arithmetic number, because the mean of its divisors is an integer number (118022549580).

Almost surely, 2^{1993955805896} is an apocalyptic number.

It is an amenable number.

1993955805896 is a deficient number, since it is larger than the sum of its proper divisors (1782765780664).

1993955805896 is a wasteful number, since it uses less digits than its factorization.

1993955805896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126205 (or 1126201 counting only the distinct ones).

The product of its (nonzero) digits is 944784000, while the sum is 77.

The spelling of 1993955805896 in words is "one trillion, nine hundred ninety-three billion, nine hundred fifty-five million, eight hundred five thousand, eight hundred ninety-six".