1797904538000 has 40 divisors (see below), whose sum is σ = 4347333177720. Its totient is φ = 719161814400.

The previous prime is 1797904537997. The next prime is 1797904538009. The reversal of 1797904538000 is 8354097971.

It can be written as a sum of positive squares in 4 ways, for example, as 16982259856 + 1780922278144 = 130316^2 + 1334512^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1797904538009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 449474135 + ... + 449478134.

It is an arithmetic number, because the mean of its divisors is an integer number (108683329443).

Almost surely, 2^{1797904538000} is an apocalyptic number.

1797904538000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1797904538000 is an abundant number, since it is smaller than the sum of its proper divisors (2549428639720).

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

1797904538000 is an equidigital number, since it uses as much as digits as its factorization.

1797904538000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898952292 (or 898952276 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 1797904538000 in words is "one trillion, seven hundred ninety-seven billion, nine hundred four million, five hundred thirty-eight thousand".