1800113789440 has 160 divisors (see below), whose sum is σ = 4355986574016. Its totient is φ = 713411297280.

The previous prime is 1800113789423. The next prime is 1800113789491. The reversal of 1800113789440 is 449873110081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

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, 138113164 + ... + 138126196.

Almost surely, 2^{1800113789440} is an apocalyptic number.

1800113789440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1800113789440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177993287008).

1800113789440 is an abundant number, since it is smaller than the sum of its proper divisors (2555872784576).

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

1800113789440 is a wasteful number, since it uses less digits than its factorization.

1800113789440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13550 (or 13534 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 1800113789440 in words is "one trillion, eight hundred billion, one hundred thirteen million, seven hundred eighty-nine thousand, four hundred forty".