1086865618369 has 4 divisors (see below), whose sum is σ = 1087808260996. Its totient is φ = 1085922975744.

The previous prime is 1086865618357. The next prime is 1086865618403. The reversal of 1086865618369 is 9638165686801.

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 709300840000 + 377564778369 = 842200^2 + 614463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1086865618369 - 2⁵ = 1086865618337 is a prime.

It is a super-2 number, since 2×1086865618369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1086865612369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471319584 + ... + 471321889.

It is an arithmetic number, because the mean of its divisors is an integer number (271952065249).

Almost surely, 2^{1086865618369} is an apocalyptic number.

It is an amenable number.

1086865618369 is a deficient number, since it is larger than the sum of its proper divisors (942642627).

1086865618369 is an equidigital number, since it uses as much as digits as its factorization.

1086865618369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942642626.

The product of its (nonzero) digits is 89579520, while the sum is 67.

The spelling of 1086865618369 in words is "one trillion, eighty-six billion, eight hundred sixty-five million, six hundred eighteen thousand, three hundred sixty-nine".