1598809799 has 4 divisors (see below), whose sum is σ = 1602093264. Its totient is φ = 1595526336.

The previous prime is 1598809781. The next prime is 1598809813. The reversal of 1598809799 is 9979088951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1598809799 - 2²⁸ = 1330374343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1598809099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641002 + ... + 1641975.

It is an arithmetic number, because the mean of its divisors is an integer number (400523316).

Almost surely, 2^1598809799 is an apocalyptic number.

1598809799 is a deficient number, since it is larger than the sum of its proper divisors (3283465).

1598809799 is an equidigital number, since it uses as much as digits as its factorization.

1598809799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283464.

The product of its (nonzero) digits is 14696640, while the sum is 65.

The square root of 1598809799 is about 39985.1197197157. The cubic root of 1598809799 is about 1169.3170092743.

The spelling of 1598809799 in words is "one billion, five hundred ninety-eight million, eight hundred nine thousand, seven hundred ninety-nine".