1598739660 has 576 divisors, whose sum is σ = 6287984640. Its totient is φ = 335301120.

The previous prime is 1598739641. The next prime is 1598739661. The reversal of 1598739660 is 669378951.

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

It is a junction number, because it is equal to n+sod(n) for n = 1598739597 and 1598739606.

It is not an unprimeable number, because it can be changed into a prime (1598739661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 22517425 + ... + 22517495.

It is an arithmetic number, because the mean of its divisors is an integer number (10916640).

Almost surely, 2^1598739660 is an apocalyptic number.

1598739660 is a gapful number since it is divisible by the number (10) 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 1598739660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3143992320).

1598739660 is an abundant number, since it is smaller than the sum of its proper divisors (4689244980).

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

1598739660 is a wasteful number, since it uses less digits than its factorization.

1598739660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 1598739660 is about 39984.2426463226. The cubic root of 1598739660 is about 1169.2999099034.

The spelling of 1598739660 in words is "one billion, five hundred ninety-eight million, seven hundred thirty-nine thousand, six hundred sixty".