1198911 has 16 divisors (see below), whose sum is σ = 1877504. Its totient is φ = 666144.

The previous prime is 1198903. The next prime is 1198927.

It is a happy number.

1198911 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1198911 - 2³ = 1198903 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198991) 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, 6 + ... + 1548.

It is an arithmetic number, because the mean of its divisors is an integer number (117344).

2^1198911 is an apocalyptic number.

1198911 is a deficient number, since it is larger than the sum of its proper divisors (678593).

1198911 is a wasteful number, since it uses less digits than its factorization.

1198911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 648, while the sum is 30.

The square root of 1198911 is about 1094.9479439681. The cubic root of 1198911 is about 106.2337017676.

The spelling of 1198911 in words is "one million, one hundred ninety-eight thousand, nine hundred eleven".