1985912500002 has 8 divisors (see below), whose sum is σ = 3971825000016. Its totient is φ = 661970833332.

The previous prime is 1985912499979. The next prime is 1985912500027. The reversal of 1985912500002 is 2000052195891.

It is a sphenic number, since it is the product of 3 distinct primes.

1985912500002 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165492708328 + ... + 165492708339.

It is an arithmetic number, because the mean of its divisors is an integer number (496478125002).

Almost surely, 2^{1985912500002} is an apocalyptic number.

1985912500002 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.

1985912500002 is a wasteful number, since it uses less digits than its factorization.

1985912500002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330985416672.

The product of its (nonzero) digits is 64800, while the sum is 42.

Adding to 1985912500002 its reverse (2000052195891), we get a palindrome (3985964695893).

The spelling of 1985912500002 in words is "one trillion, nine hundred eighty-five billion, nine hundred twelve million, five hundred thousand, two".