1198281581520 has 80 divisors (see below), whose sum is σ = 3718091074560. Its totient is φ = 319247718912.

The previous prime is 1198281581513. The next prime is 1198281581527. The reversal of 1198281581520 is 251851828911.

It is an interprime number because it is at equal distance from previous prime (1198281581513) and next prime (1198281581527).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1198281581520² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198281581527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2035735 + ... + 2557494.

It is an arithmetic number, because the mean of its divisors is an integer number (46476138432).

Almost surely, 2^{1198281581520} is an apocalyptic number.

1198281581520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198281581520 is an abundant number, since it is smaller than the sum of its proper divisors (2519809493040).

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

1198281581520 is a wasteful number, since it uses less digits than its factorization.

1198281581520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594332 (or 4594326 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 51.

The spelling of 1198281581520 in words is "one trillion, one hundred ninety-eight billion, two hundred eighty-one million, five hundred eighty-one thousand, five hundred twenty".