1185778440098 has 54 divisors (see below), whose sum is σ = 2081608803729. Its totient is φ = 505127727888.

The previous prime is 1185778440071. The next prime is 1185778440109. The reversal of 1185778440098 is 8900448775811.

It can be written as a sum of positive squares in 2 ways, for example, as 865471114249 + 320307325849 = 930307^2 + 565957^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=769993.

It is a self number, because there is not a number n which added to its sum of digits gives 1185778440098.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 3417228761 + ... + 3417229107.

Almost surely, 2^{1185778440098} is an apocalyptic number.

1185778440098 is a deficient number, since it is larger than the sum of its proper divisors (895830363631).

1185778440098 is an frugal number, since it uses more digits than its factorization.

1185778440098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 62.

The spelling of 1185778440098 in words is "one trillion, one hundred eighty-five billion, seven hundred seventy-eight million, four hundred forty thousand, ninety-eight".