1999864983594 has 32 divisors (see below), whose sum is σ = 4349467889856. Its totient is φ = 610451631360.

The previous prime is 1999864983517. The next prime is 1999864983601. The reversal of 1999864983594 is 4953894689991.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264949192 + ... + 264956739.

It is an arithmetic number, because the mean of its divisors is an integer number (135920871558).

Almost surely, 2^{1999864983594} is an apocalyptic number.

1999864983594 is an abundant number, since it is smaller than the sum of its proper divisors (2349602906262).

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

1999864983594 is a wasteful number, since it uses less digits than its factorization.

1999864983594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529905990.

The product of its digits is 5441955840, while the sum is 84.

The spelling of 1999864983594 in words is "one trillion, nine hundred ninety-nine billion, eight hundred sixty-four million, nine hundred eighty-three thousand, five hundred ninety-four".