1820009111000 has 32 divisors (see below), whose sum is σ = 4258821322080. Its totient is φ = 728003644000.

The previous prime is 1820009110993. The next prime is 1820009111057. The reversal of 1820009111000 is 1119000281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910003556 + ... + 910005555.

It is an arithmetic number, because the mean of its divisors is an integer number (133088166315).

Almost surely, 2^{1820009111000} is an apocalyptic number.

1820009111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1820009111000 is an abundant number, since it is smaller than the sum of its proper divisors (2438812211080).

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

1820009111000 is a wasteful number, since it uses less digits than its factorization.

1820009111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820009132 (or 1820009118 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1820009111000 in words is "one trillion, eight hundred twenty billion, nine million, one hundred eleven thousand".