1293198893568 has 60 divisors (see below), whose sum is σ = 3732259580478. Its totient is φ = 431066296320.

The previous prime is 1293198893561. The next prime is 1293198893579. The reversal of 1293198893568 is 8653988913921.

1293198893568 is a `hidden beast` number, since 1 + 2 + 9 + 3 + 198 + 89 + 356 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 842195314944 + 451003578624 = 917712^2 + 671568^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1293198893496 and 1293198893505.

It is not an unprimeable number, because it can be changed into a prime (1293198893561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140316453 + ... + 140325668.

Almost surely, 2^{1293198893568} is an apocalyptic number.

1293198893568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1293198893568 is an abundant number, since it is smaller than the sum of its proper divisors (2439060686910).

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

1293198893568 is an equidigital number, since it uses as much as digits as its factorization.

1293198893568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280642145 (or 280642126 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 72.

The spelling of 1293198893568 in words is "one trillion, two hundred ninety-three billion, one hundred ninety-eight million, eight hundred ninety-three thousand, five hundred sixty-eight".