1819730303197 has 16 divisors (see below), whose sum is σ = 1834824499200. Its totient is φ = 1804708427760.

The previous prime is 1819730303179. The next prime is 1819730303309. The reversal of 1819730303197 is 7913030379181.

It is a cyclic number.

It is not a de Polignac number, because 1819730303197 - 2²³ = 1819721914589 is a prime.

It is a super-2 number, since 2×1819730303197² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819730303117) 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, 93834372 + ... + 93853762.

It is an arithmetic number, because the mean of its divisors is an integer number (114676531200).

Almost surely, 2^{1819730303197} is an apocalyptic number.

It is an amenable number.

1819730303197 is a deficient number, since it is larger than the sum of its proper divisors (15094196003).

1819730303197 is a wasteful number, since it uses less digits than its factorization.

1819730303197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21216.

The product of its (nonzero) digits is 857304, while the sum is 52.

The spelling of 1819730303197 in words is "one trillion, eight hundred nineteen billion, seven hundred thirty million, three hundred three thousand, one hundred ninety-seven".