1198481886 has 192 divisors, whose sum is σ = 3370752000. Its totient is φ = 313528320.

The previous prime is 1198481881. The next prime is 1198481897. The reversal of 1198481886 is 6881848911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198481881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1558110 + ... + 1558878.

It is an arithmetic number, because the mean of its divisors is an integer number (17556000).

Almost surely, 2^1198481886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1198481886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685376000).

1198481886 is an abundant number, since it is smaller than the sum of its proper divisors (2172270114).

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

1198481886 is a wasteful number, since it uses less digits than its factorization.

1198481886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 831 counting only the distinct ones).

The product of its digits is 884736, while the sum is 54.

The square root of 1198481886 is about 34619.0971286081. The cubic root of 1198481886 is about 1062.2102587301.

The spelling of 1198481886 in words is "one billion, one hundred ninety-eight million, four hundred eighty-one thousand, eight hundred eighty-six".