1818782240424 has 32 divisors (see below), whose sum is σ = 4547481961920. Its totient is φ = 606190565376.

The previous prime is 1818782240423. The next prime is 1818782240447. The reversal of 1818782240424 is 4240422878181.

It is not an unprimeable number, because it can be changed into a prime (1818782240423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4174489 + ... + 4589544.

It is an arithmetic number, because the mean of its divisors is an integer number (142108811310).

Almost surely, 2^{1818782240424} is an apocalyptic number.

It is an amenable number.

1818782240424 is an abundant number, since it is smaller than the sum of its proper divisors (2728699721496).

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

1818782240424 is a wasteful number, since it uses less digits than its factorization.

1818782240424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772689 (or 8772685 counting only the distinct ones).

The product of its (nonzero) digits is 1835008, while the sum is 51.

The spelling of 1818782240424 in words is "one trillion, eight hundred eighteen billion, seven hundred eighty-two million, two hundred forty thousand, four hundred twenty-four".