2194347443834 has 64 divisors (see below), whose sum is σ = 4427771185152. Its totient is φ = 790673356800.

The previous prime is 2194347443831. The next prime is 2194347443839. The reversal of 2194347443834 is 4383447434912.

It is a self number, because there is not a number n which added to its sum of digits gives 2194347443834.

It is not an unprimeable number, because it can be changed into a prime (2194347443831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11343227 + ... + 11535054.

It is an arithmetic number, because the mean of its divisors is an integer number (69183924768).

Almost surely, 2^{2194347443834} is an apocalyptic number.

2194347443834 is an abundant number, since it is smaller than the sum of its proper divisors (2233423741318).

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

2194347443834 is a wasteful number, since it uses less digits than its factorization.

2194347443834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22878351.

The product of its digits is 27869184, while the sum is 56.

The spelling of 2194347443834 in words is "two trillion, one hundred ninety-four billion, three hundred forty-seven million, four hundred forty-three thousand, eight hundred thirty-four".