1819345317320 has 32 divisors (see below), whose sum is σ = 4107991749120. Its totient is φ = 725166609600.

The previous prime is 1819345317263. The next prime is 1819345317329. The reversal of 1819345317320 is 237135439181.

It is a super-2 number, since 2×1819345317320² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1819345317329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80348456 + ... + 80371095.

It is an arithmetic number, because the mean of its divisors is an integer number (128374742160).

Almost surely, 2^{1819345317320} is an apocalyptic number.

1819345317320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1819345317320 is an abundant number, since it is smaller than the sum of its proper divisors (2288646431800).

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

1819345317320 is a wasteful number, since it uses less digits than its factorization.

1819345317320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160719845 (or 160719841 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 1819345317320 in words is "one trillion, eight hundred nineteen billion, three hundred forty-five million, three hundred seventeen thousand, three hundred twenty".