1789800145840 has 80 divisors (see below), whose sum is σ = 5035504974912. Its totient is φ = 577548951552.

The previous prime is 1789800145831. The next prime is 1789800145867. The reversal of 1789800145840 is 485410089871.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93992589 + ... + 94011628.

Almost surely, 2^{1789800145840} is an apocalyptic number.

1789800145840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1789800145840 is an abundant number, since it is smaller than the sum of its proper divisors (3245704829072).

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

1789800145840 is a wasteful number, since it uses less digits than its factorization.

1789800145840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188004254 (or 188004248 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 55.

The spelling of 1789800145840 in words is "one trillion, seven hundred eighty-nine billion, eight hundred million, one hundred forty-five thousand, eight hundred forty".