1840434278430 has 64 divisors (see below), whose sum is σ = 4818805820928. Its totient is φ = 446146047360.

The previous prime is 1840434278429. The next prime is 1840434278471. The reversal of 1840434278430 is 348724340481.

It is a self number, because there is not a number n which added to its sum of digits gives 1840434278430.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 8142807 + ... + 8365773.

It is an arithmetic number, because the mean of its divisors is an integer number (75293840952).

Almost surely, 2^{1840434278430} is an apocalyptic number.

1840434278430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1840434278430 is an abundant number, since it is smaller than the sum of its proper divisors (2978371542498).

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

1840434278430 is a wasteful number, since it uses less digits than its factorization.

1840434278430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248001.

The product of its (nonzero) digits is 2064384, while the sum is 48.

The spelling of 1840434278430 in words is "one trillion, eight hundred forty billion, four hundred thirty-four million, two hundred seventy-eight thousand, four hundred thirty".