1198564611 has 8 divisors (see below), whose sum is σ = 1605660864. Its totient is φ = 795255720.

The previous prime is 1198564607. The next prime is 1198564621. The reversal of 1198564611 is 1164658911.

It is a happy number.

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

It is not a de Polignac number, because 1198564611 - 2² = 1198564607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1198564621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946101 + ... + 947366.

It is an arithmetic number, because the mean of its divisors is an integer number (200707608).

Almost surely, 2^1198564611 is an apocalyptic number.

1198564611 is a deficient number, since it is larger than the sum of its proper divisors (407096253).

1198564611 is a wasteful number, since it uses less digits than its factorization.

1198564611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893681.

The product of its digits is 51840, while the sum is 42.

The square root of 1198564611 is about 34620.2918965164. The cubic root of 1198564611 is about 1062.2346977929.

The spelling of 1198564611 in words is "one billion, one hundred ninety-eight million, five hundred sixty-four thousand, six hundred eleven".