1598840856 has 96 divisors (see below), whose sum is σ = 4541518800. Its totient is φ = 526901760.

The previous prime is 1598840849. The next prime is 1598840863. The reversal of 1598840856 is 6580488951.

It is a happy number.

1598840856 is a `hidden beast` number, since 1 + 598 + 8 + 40 + 8 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1598840849) and next prime (1598840863).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168396 + ... + 177636.

Almost surely, 2^1598840856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1598840856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2270759400).

1598840856 is an abundant number, since it is smaller than the sum of its proper divisors (2942677944).

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

1598840856 is an equidigital number, since it uses as much as digits as its factorization.

1598840856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9351 (or 9335 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The square root of 1598840856 is about 39985.5080748013. The cubic root of 1598840856 is about 1169.3245805821.

The spelling of 1598840856 in words is "one billion, five hundred ninety-eight million, eight hundred forty thousand, eight hundred fifty-six".