1198217580 has 144 divisors (see below), whose sum is σ = 4028967936. Its totient is φ = 265023360.

The previous prime is 1198217567. The next prime is 1198217597. The reversal of 1198217580 is 857128911.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 47 ways as a sum of consecutive naturals, for example, 84567 + ... + 97713.

It is an arithmetic number, because the mean of its divisors is an integer number (27978944).

Almost surely, 2^1198217580 is an apocalyptic number.

1198217580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1198217580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2014483968).

1198217580 is an abundant number, since it is smaller than the sum of its proper divisors (2830750356).

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

1198217580 is a wasteful number, since it uses less digits than its factorization.

1198217580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13204 (or 13195 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 1198217580 is about 34615.2795741996. The cubic root of 1198217580 is about 1062.1321684982.

The spelling of 1198217580 in words is "one billion, one hundred ninety-eight million, two hundred seventeen thousand, five hundred eighty".