1805474473640 has 32 divisors (see below), whose sum is σ = 4062424320000. Its totient is φ = 722170810944.

The previous prime is 1805474473609. The next prime is 1805474473679. The reversal of 1805474473640 is 463744745081.

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 7 ways as a sum of consecutive naturals, for example, 1000961 + ... + 2147759.

It is an arithmetic number, because the mean of its divisors is an integer number (126950760000).

Almost surely, 2^{1805474473640} is an apocalyptic number.

1805474473640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1805474473640 is an abundant number, since it is smaller than the sum of its proper divisors (2256949846360).

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

1805474473640 is a wasteful number, since it uses less digits than its factorization.

1805474473640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186169 (or 1186165 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 1805474473640 in words is "one trillion, eight hundred five billion, four hundred seventy-four million, four hundred seventy-three thousand, six hundred forty".