1198698611 has 16 divisors (see below), whose sum is σ = 1393446240. Its totient is φ = 1019066880.

The previous prime is 1198698559. The next prime is 1198698623. The reversal of 1198698611 is 1168968911.

It is a cyclic number.

It is not a de Polignac number, because 1198698611 - 2¹⁰ = 1198697587 is a prime.

1198698611 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1198698611.

It is not an unprimeable number, because it can be changed into a prime (1198698671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8945 + ... + 49773.

It is an arithmetic number, because the mean of its divisors is an integer number (87090390).

Almost surely, 2^1198698611 is an apocalyptic number.

1198698611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1198698611 is a deficient number, since it is larger than the sum of its proper divisors (194747629).

1198698611 is a wasteful number, since it uses less digits than its factorization.

1198698611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41014.

The product of its digits is 186624, while the sum is 50.

The square root of 1198698611 is about 34622.2271236268. The cubic root of 1198698611 is about 1062.2742824049.

The spelling of 1198698611 in words is "one billion, one hundred ninety-eight million, six hundred ninety-eight thousand, six hundred eleven".