1188057850085 has 4 divisors (see below), whose sum is σ = 1425669420108. Its totient is φ = 950446280064.

The previous prime is 1188057850069. The next prime is 1188057850099. The reversal of 1188057850085 is 5800587508811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 210998747716 + 977059102369 = 459346^2 + 988463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1188057850085 - 2⁴ = 1188057850069 is a prime.

It is a super-2 number, since 2×1188057850085² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1188057850085.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 118805785004 + ... + 118805785013.

It is an arithmetic number, because the mean of its divisors is an integer number (356417355027).

Almost surely, 2^{1188057850085} is an apocalyptic number.

It is an amenable number.

1188057850085 is a deficient number, since it is larger than the sum of its proper divisors (237611570023).

1188057850085 is an equidigital number, since it uses as much as digits as its factorization.

1188057850085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237611570022.

The product of its (nonzero) digits is 3584000, while the sum is 56.

The spelling of 1188057850085 in words is "one trillion, one hundred eighty-eight billion, fifty-seven million, eight hundred fifty thousand, eighty-five".