1198791 has 12 divisors (see below), whose sum is σ = 1889160. Its totient is φ = 726480.

The previous prime is 1198751. The next prime is 1198793. The reversal of 1198791 is 1978911.

It is not a de Polignac number, because 1198791 - 2⁶ = 1198727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5956 + ... + 6153.

It is an arithmetic number, because the mean of its divisors is an integer number (157430).

2^1198791 is an apocalyptic number.

1198791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1198791 is a deficient number, since it is larger than the sum of its proper divisors (690369).

1198791 is a wasteful number, since it uses less digits than its factorization.

1198791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12126 (or 12123 counting only the distinct ones).

The product of its digits is 4536, while the sum is 36.

The square root of 1198791 is about 1094.8931454713. The cubic root of 1198791 is about 106.2301573095.

The spelling of 1198791 in words is "one million, one hundred ninety-eight thousand, seven hundred ninety-one".