1797323978319 has 8 divisors (see below), whose sum is σ = 2473736228352. Its totient is φ = 1159563856920.

The previous prime is 1797323978309. The next prime is 1797323978327. The reversal of 1797323978319 is 9138793237971.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1797323978319 - 2²¹ = 1797321881167 is a prime.

It is a super-2 number, since 2×1797323978319² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1797323978309) 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, 9663032049 + ... + 9663032234.

It is an arithmetic number, because the mean of its divisors is an integer number (309217028544).

Almost surely, 2^{1797323978319} is an apocalyptic number.

1797323978319 is a deficient number, since it is larger than the sum of its proper divisors (676412250033).

1797323978319 is a wasteful number, since it uses less digits than its factorization.

1797323978319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19326064317.

The product of its digits is 108020304, while the sum is 69.

The spelling of 1797323978319 in words is "one trillion, seven hundred ninety-seven billion, three hundred twenty-three million, nine hundred seventy-eight thousand, three hundred nineteen".