1598001820 has 24 divisors (see below), whose sum is σ = 3501709344. Its totient is φ = 611409216.

The previous prime is 1598001793. The next prime is 1598001829. The reversal of 1598001820 is 281008951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1598001829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1736499 + ... + 1737418.

It is an arithmetic number, because the mean of its divisors is an integer number (145904556).

Almost surely, 2^1598001820 is an apocalyptic number.

1598001820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1598001820 is an abundant number, since it is smaller than the sum of its proper divisors (1903707524).

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

1598001820 is a wasteful number, since it uses less digits than its factorization.

1598001820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473949 (or 3473947 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 1598001820 is about 39975.0149468390. The cubic root of 1598001820 is about 1169.1199996433.

The spelling of 1598001820 in words is "one billion, five hundred ninety-eight million, one thousand, eight hundred twenty".