1598998866 has 8 divisors (see below), whose sum is σ = 3197997744. Its totient is φ = 532999620.

The previous prime is 1598998861. The next prime is 1598998889. The reversal of 1598998866 is 6688998951.

It is a sphenic number, since it is the product of 3 distinct primes.

1598998866 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1598998866.

It is not an unprimeable number, because it can be changed into a prime (1598998861) 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 3 ways as a sum of consecutive naturals, for example, 133249900 + ... + 133249911.

It is an arithmetic number, because the mean of its divisors is an integer number (399749718).

Almost surely, 2^1598998866 is an apocalyptic number.

1598998866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1598998866 is a wasteful number, since it uses less digits than its factorization.

1598998866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266499816.

The product of its digits is 67184640, while the sum is 69.

The square root of 1598998866 is about 39987.4838668301. The cubic root of 1598998866 is about 1169.3630999235.

The spelling of 1598998866 in words is "one billion, five hundred ninety-eight million, nine hundred ninety-eight thousand, eight hundred sixty-six".