1198885398 has 8 divisors (see below), whose sum is σ = 2397770808. Its totient is φ = 399628464.

The previous prime is 1198885393. The next prime is 1198885403. The reversal of 1198885398 is 8935888911.

It is an interprime number because it is at equal distance from previous prime (1198885393) and next prime (1198885403).

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

1198885398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198885393) 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, 99907111 + ... + 99907122.

It is an arithmetic number, because the mean of its divisors is an integer number (299721351).

Almost surely, 2^1198885398 is an apocalyptic number.

1198885398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1198885398 is a wasteful number, since it uses less digits than its factorization.

1198885398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199814238.

The product of its digits is 4976640, while the sum is 60.

The square root of 1198885398 is about 34624.9245197733. The cubic root of 1198885398 is about 1062.3294557735.

The spelling of 1198885398 in words is "one billion, one hundred ninety-eight million, eight hundred eighty-five thousand, three hundred ninety-eight".