1839966656 has 84 divisors (see below), whose sum is σ = 4089919176. Its totient is φ = 820385280.

The previous prime is 1839966649. The next prime is 1839966671. The reversal of 1839966656 is 6566699381.

It is a super-5 number, since 5×1839966656⁵ (a number of 48 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1839966595 and 1839966604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408191 + ... + 412673.

It is an arithmetic number, because the mean of its divisors is an integer number (48689514).

Almost surely, 2^1839966656 is an apocalyptic number.

1839966656 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 1839966656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2044959588).

1839966656 is an abundant number, since it is smaller than the sum of its proper divisors (2249952520).

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

1839966656 is a wasteful number, since it uses less digits than its factorization.

1839966656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570 (or 4549 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 59.

The square root of 1839966656 is about 42894.8325092895. The cubic root of 1839966656 is about 1225.3777329644.

The spelling of 1839966656 in words is "one billion, eight hundred thirty-nine million, nine hundred sixty-six thousand, six hundred fifty-six".