1198951 has 4 divisors (see below), whose sum is σ = 1291192. Its totient is φ = 1106712.

The previous prime is 1198949. The next prime is 1198973. The reversal of 1198951 is 1598911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1198951 - 2¹ = 1198949 is a prime.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46101 + ... + 46126.

It is an arithmetic number, because the mean of its divisors is an integer number (322798).

2^1198951 is an apocalyptic number.

1198951 is a deficient number, since it is larger than the sum of its proper divisors (92241).

1198951 is an equidigital number, since it uses as much as digits as its factorization.

1198951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92240.

The product of its digits is 3240, while the sum is 34.

The square root of 1198951 is about 1094.9662095243. The cubic root of 1198951 is about 106.2348832011.

The spelling of 1198951 in words is "one million, one hundred ninety-eight thousand, nine hundred fifty-one".