1598409601 has 4 divisors (see below), whose sum is σ = 1617667632. Its totient is φ = 1579151572.

The previous prime is 1598409577. The next prime is 1598409623. The reversal of 1598409601 is 1069048951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1069048951 = 773 ⋅1382987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1598409601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1598409301) 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, 9628891 + ... + 9629056.

It is an arithmetic number, because the mean of its divisors is an integer number (404416908).

Almost surely, 2^1598409601 is an apocalyptic number.

It is an amenable number.

1598409601 is a deficient number, since it is larger than the sum of its proper divisors (19258031).

1598409601 is an equidigital number, since it uses as much as digits as its factorization.

1598409601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19258030.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1598409601 is about 39980.1150698694. The cubic root of 1598409601 is about 1169.2194372389.

The spelling of 1598409601 in words is "one billion, five hundred ninety-eight million, four hundred nine thousand, six hundred one".