1598032640 has 288 divisors, whose sum is σ = 4407975936. Its totient is φ = 551485440.

The previous prime is 1598032637. The next prime is 1598032649. The reversal of 1598032640 is 462308951.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1598032594 and 1598032603.

It is not an unprimeable number, because it can be changed into a prime (1598032649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15514829 + ... + 15514931.

It is an arithmetic number, because the mean of its divisors is an integer number (15305472).

Almost surely, 2^1598032640 is an apocalyptic number.

1598032640 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 1598032640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203987968).

1598032640 is an abundant number, since it is smaller than the sum of its proper divisors (2809943296).

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

1598032640 is a wasteful number, since it uses less digits than its factorization.

1598032640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1598032640 is about 39975.4004357680. The cubic root of 1598032640 is about 1169.1275157063.

The spelling of 1598032640 in words is "one billion, five hundred ninety-eight million, thirty-two thousand, six hundred forty".