1840440865530 has 32 divisors (see below), whose sum is σ = 4489468869888. Its totient is φ = 482738587200.

The previous prime is 1840440865513. The next prime is 1840440865537. The reversal of 1840440865530 is 355680440481.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1840440865530.

It is not an unprimeable number, because it can be changed into a prime (1840440865537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502850866 + ... + 502854525.

It is an arithmetic number, because the mean of its divisors is an integer number (140295902184).

Almost surely, 2^{1840440865530} is an apocalyptic number.

1840440865530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1840440865530 is an abundant number, since it is smaller than the sum of its proper divisors (2649028004358).

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

1840440865530 is a wasteful number, since it uses less digits than its factorization.

1840440865530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005705462.

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 1840440865530 in words is "one trillion, eight hundred forty billion, four hundred forty million, eight hundred sixty-five thousand, five hundred thirty".