1198751 has 2 divisors, whose sum is σ = 1198752. Its totient is φ = 1198750.

The previous prime is 1198727. The next prime is 1198793. The reversal of 1198751 is 1578911.

It is a weak prime.

It is an emirp because it is prime and its reverse (1578911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1198751 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198051) 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 as a sum of consecutive naturals, namely, 599375 + 599376.

It is an arithmetic number, because the mean of its divisors is an integer number (599376).

2^1198751 is an apocalyptic number.

1198751 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198751 is an equidigital number, since it uses as much as digits as its factorization.

1198751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 32.

The square root of 1198751 is about 1094.8748786962. The cubic root of 1198751 is about 106.2289757709.

The spelling of 1198751 in words is "one million, one hundred ninety-eight thousand, seven hundred fifty-one".