19790795343918 has 32 divisors (see below), whose sum is σ = 39740044184064. Its totient is φ = 6570528602112.

The previous prime is 19790795343889. The next prime is 19790795343919. The reversal of 19790795343918 is 81934359709791.

It is a self number, because there is not a number n which added to its sum of digits gives 19790795343918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19790795343919) 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, 13176321 + ... + 14601267.

It is an arithmetic number, because the mean of its divisors is an integer number (1241876380752).

Almost surely, 2^{19790795343918} is an apocalyptic number.

19790795343918 is an abundant number, since it is smaller than the sum of its proper divisors (19949248840146).

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

19790795343918 is a wasteful number, since it uses less digits than its factorization.

19790795343918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434216.

The product of its (nonzero) digits is 462944160, while the sum is 75.

The spelling of 19790795343918 in words is "nineteen trillion, seven hundred ninety billion, seven hundred ninety-five million, three hundred forty-three thousand, nine hundred eighteen".