1198432111 has 2 divisors, whose sum is σ = 1198432112. Its totient is φ = 1198432110.

The previous prime is 1198432057. The next prime is 1198432117. The reversal of 1198432111 is 1112348911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1198432111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198432117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599216055 + 599216056.

It is an arithmetic number, because the mean of its divisors is an integer number (599216056).

Almost surely, 2^1198432111 is an apocalyptic number.

1198432111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198432111 is an equidigital number, since it uses as much as digits as its factorization.

1198432111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 31.

The square root of 1198432111 is about 34618.3782260232. The cubic root of 1198432111 is about 1062.1955533910.

The spelling of 1198432111 in words is "one billion, one hundred ninety-eight million, four hundred thirty-two thousand, one hundred eleven".