1843978479079 has 4 divisors (see below), whose sum is σ = 2011612886280. Its totient is φ = 1676344071880.

The previous prime is 1843978478977. The next prime is 1843978479139. The reversal of 1843978479079 is 9709748793481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1843978479079 - 2²³ = 1843970090471 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1843978478996 and 1843978479014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1843978479179) 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, 83817203584 + ... + 83817203605.

It is an arithmetic number, because the mean of its divisors is an integer number (502903221570).

Almost surely, 2^{1843978479079} is an apocalyptic number.

1843978479079 is a deficient number, since it is larger than the sum of its proper divisors (167634407201).

1843978479079 is a wasteful number, since it uses less digits than its factorization.

1843978479079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167634407200.

The product of its (nonzero) digits is 768144384, while the sum is 76.

The spelling of 1843978479079 in words is "one trillion, eight hundred forty-three billion, nine hundred seventy-eight million, four hundred seventy-nine thousand, seventy-nine".