1819345317340 has 12 divisors (see below), whose sum is σ = 3820625166456. Its totient is φ = 727738126928.

The previous prime is 1819345317329. The next prime is 1819345317341. The reversal of 1819345317340 is 437135439181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819345317341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45483632914 + ... + 45483632953.

It is an arithmetic number, because the mean of its divisors is an integer number (318385430538).

Almost surely, 2^{1819345317340} is an apocalyptic number.

1819345317340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1819345317340 is an abundant number, since it is smaller than the sum of its proper divisors (2001279849116).

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

1819345317340 is a wasteful number, since it uses less digits than its factorization.

1819345317340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90967265876 (or 90967265874 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 1819345317340 in words is "one trillion, eight hundred nineteen billion, three hundred forty-five million, three hundred seventeen thousand, three hundred forty".