1979845056 has 168 divisors, whose sum is σ = 6510223200. Its totient is φ = 563521536.

The previous prime is 1979845031. The next prime is 1979845069. The reversal of 1979845056 is 6505489791.

It is a tau number, because it is divible by the number of its divisors (168).

It is a junction number, because it is equal to n+sod(n) for n = 1979844993 and 1979845011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1277370 + ... + 1278918.

Almost surely, 2^1979845056 is an apocalyptic number.

1979845056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979845056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3255111600).

1979845056 is an abundant number, since it is smaller than the sum of its proper divisors (4530378144).

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

1979845056 is a wasteful number, since it uses less digits than its factorization.

1979845056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891 (or 1878 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 1979845056 is about 44495.4498347865. The cubic root of 1979845056 is about 1255.6744798565.

The spelling of 1979845056 in words is "one billion, nine hundred seventy-nine million, eight hundred forty-five thousand, fifty-six".