1798856908540 has 48 divisors (see below), whose sum is σ = 3816943236288. Its totient is φ = 712058494464.

The previous prime is 1798856908517. The next prime is 1798856908561. The reversal of 1798856908540 is 458096588971.

It is a self number, because there is not a number n which added to its sum of digits gives 1798856908540.

It is a congruent number.

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, 2647294 + ... + 3256666.

It is an arithmetic number, because the mean of its divisors is an integer number (79519650756).

Almost surely, 2^{1798856908540} is an apocalyptic number.

1798856908540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1798856908540 is an abundant number, since it is smaller than the sum of its proper divisors (2018086327748).

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

1798856908540 is a wasteful number, since it uses less digits than its factorization.

1798856908540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610918 (or 610916 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 70.

The spelling of 1798856908540 in words is "one trillion, seven hundred ninety-eight billion, eight hundred fifty-six million, nine hundred eight thousand, five hundred forty".