1198355659 has 4 divisors (see below), whose sum is σ = 1198517904. Its totient is φ = 1198193416.

The previous prime is 1198355657. The next prime is 1198355671. The reversal of 1198355659 is 9565538911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9565538911 = 131 ⋅73019381.

It is a cyclic number.

It is not a de Polignac number, because 1198355659 - 2¹ = 1198355657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1198355657) 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, 69487 + ... + 85000.

It is an arithmetic number, because the mean of its divisors is an integer number (299629476).

Almost surely, 2^1198355659 is an apocalyptic number.

1198355659 is a deficient number, since it is larger than the sum of its proper divisors (162245).

1198355659 is an equidigital number, since it uses as much as digits as its factorization.

1198355659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162244.

The product of its digits is 1458000, while the sum is 52.

The square root of 1198355659 is about 34617.2739972402. The cubic root of 1198355659 is about 1062.1729659062.

The spelling of 1198355659 in words is "one billion, one hundred ninety-eight million, three hundred fifty-five thousand, six hundred fifty-nine".