1988754082540 has 12 divisors (see below), whose sum is σ = 4176383573376. Its totient is φ = 795501633008.

The previous prime is 1988754082501. The next prime is 1988754082547. The reversal of 1988754082540 is 452804578891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1988754082547) 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 3 ways as a sum of consecutive naturals, for example, 49718852044 + ... + 49718852083.

It is an arithmetic number, because the mean of its divisors is an integer number (348031964448).

Almost surely, 2^{1988754082540} is an apocalyptic number.

1988754082540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1988754082540 is an abundant number, since it is smaller than the sum of its proper divisors (2187629490836).

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

1988754082540 is a wasteful number, since it uses less digits than its factorization.

1988754082540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99437704136 (or 99437704134 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 1988754082540 in words is "one trillion, nine hundred eighty-eight billion, seven hundred fifty-four million, eighty-two thousand, five hundred forty".