1198851 has 4 divisors (see below), whose sum is σ = 1598472. Its totient is φ = 799232.

The previous prime is 1198849. The next prime is 1198853. The reversal of 1198851 is 1588911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1588911 = 3 ⋅529637.

It is an interprime number because it is at equal distance from previous prime (1198849) and next prime (1198853).

It is a cyclic number.

It is not a de Polignac number, because 1198851 - 2¹ = 1198849 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1198853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199806 + ... + 199811.

It is an arithmetic number, because the mean of its divisors is an integer number (399618).

2^1198851 is an apocalyptic number.

1198851 is a deficient number, since it is larger than the sum of its proper divisors (399621).

1198851 is an equidigital number, since it uses as much as digits as its factorization.

1198851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399620.

The product of its digits is 2880, while the sum is 33.

The square root of 1198851 is about 1094.9205450625. The cubic root of 1198851 is about 106.2319295681.

The spelling of 1198851 in words is "one million, one hundred ninety-eight thousand, eight hundred fifty-one".