1198458455 has 4 divisors (see below), whose sum is σ = 1438150152. Its totient is φ = 958766760.

The previous prime is 1198458433. The next prime is 1198458491. The reversal of 1198458455 is 5548548911.

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

It is not a de Polignac number, because 1198458455 - 2¹⁰ = 1198457431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119845841 + ... + 119845850.

It is an arithmetic number, because the mean of its divisors is an integer number (359537538).

Almost surely, 2^1198458455 is an apocalyptic number.

1198458455 is a deficient number, since it is larger than the sum of its proper divisors (239691697).

1198458455 is an equidigital number, since it uses as much as digits as its factorization.

1198458455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239691696.

The product of its digits is 1152000, while the sum is 50.

The square root of 1198458455 is about 34618.7587154710. The cubic root of 1198458455 is about 1062.2033364142.

The spelling of 1198458455 in words is "one billion, one hundred ninety-eight million, four hundred fifty-eight thousand, four hundred fifty-five".