1987905026324 has 24 divisors (see below), whose sum is σ = 3976267162560. Its totient is φ = 851861344896.

The previous prime is 1987905026323. The next prime is 1987905026351. The reversal of 1987905026324 is 4236205097891.

It is a self number, because there is not a number n which added to its sum of digits gives 1987905026324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987905026323) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3833189 + ... + 4320780.

It is an arithmetic number, because the mean of its divisors is an integer number (165677798440).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1987905026324 = 3975810052648, but 3⋅1987905026324 = 5963715078972 is not.

Almost surely, 2^{1987905026324} is an apocalyptic number.

1987905026324 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1987905026324 is an abundant number, since it is smaller than the sum of its proper divisors (1988362136236).

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

1987905026324 is a wasteful number, since it uses less digits than its factorization.

1987905026324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8162687 (or 8162685 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 1987905026324 in words is "one trillion, nine hundred eighty-seven billion, nine hundred five million, twenty-six thousand, three hundred twenty-four".