1198505 has 24 divisors (see below), whose sum is σ = 1813056. Its totient is φ = 744480.

The previous prime is 1198481. The next prime is 1198511. The reversal of 1198505 is 5058911.

It is not a de Polignac number, because 1198505 - 2¹⁴ = 1182121 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4094 + ... + 4376.

It is an arithmetic number, because the mean of its divisors is an integer number (75544).

2^1198505 is an apocalyptic number.

It is an amenable number.

1198505 is a deficient number, since it is larger than the sum of its proper divisors (614551).

1198505 is a wasteful number, since it uses less digits than its factorization.

1198505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 1198505 is about 1094.7625313281. The cubic root of 1198505 is about 106.2217087305.

The spelling of 1198505 in words is "one million, one hundred ninety-eight thousand, five hundred five".