1198945 has 8 divisors (see below), whose sum is σ = 1569600. Its totient is φ = 871920.

The previous prime is 1198927. The next prime is 1198949. The reversal of 1198945 is 5498911.

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

It is not a de Polignac number, because 1198945 - 2⁹ = 1198433 is a prime.

It is a super-2 number, since 2×1198945² = 2874938226050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10845 + ... + 10954.

It is an arithmetic number, because the mean of its divisors is an integer number (196200).

2^1198945 is an apocalyptic number.

It is an amenable number.

1198945 is a deficient number, since it is larger than the sum of its proper divisors (370655).

1198945 is a wasteful number, since it uses less digits than its factorization.

1198945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21815.

The product of its digits is 12960, while the sum is 37.

The square root of 1198945 is about 1094.9634697103. The cubic root of 1198945 is about 106.2347059878.

The spelling of 1198945 in words is "one million, one hundred ninety-eight thousand, nine hundred forty-five".