1843978479081 has 8 divisors (see below), whose sum is σ = 2588039970720. Its totient is φ = 1164617986752.

The previous prime is 1843978478977. The next prime is 1843978479139. The reversal of 1843978479081 is 1809748793481.

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

It is not a de Polignac number, because 1843978479081 - 2⁹ = 1843978478569 is a prime.

It is a super-2 number, since 2×1843978479081² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1843978478997 and 1843978479015.

It is not an unprimeable number, because it can be changed into a prime (1843978479781) 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, 16175249760 + ... + 16175249873.

It is an arithmetic number, because the mean of its divisors is an integer number (323504996340).

Almost surely, 2^{1843978479081} is an apocalyptic number.

It is an amenable number.

1843978479081 is a deficient number, since it is larger than the sum of its proper divisors (744061491639).

1843978479081 is a wasteful number, since it uses less digits than its factorization.

1843978479081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32350499655.

The product of its (nonzero) digits is 97542144, while the sum is 69.

The spelling of 1843978479081 in words is "one trillion, eight hundred forty-three billion, nine hundred seventy-eight million, four hundred seventy-nine thousand, eighty-one".