1085541023449 has 3 divisors (see below), whose sum is σ = 1085542065343. Its totient is φ = 1085539981556.

The previous prime is 1085541023327. The next prime is 1085541023471. The reversal of 1085541023449 is 9443201455801.

The square root of 1085541023449 is 1041893.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 141402321225 + 944138702224 = 376035^2 + 971668^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1085541023449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1085541023399 and 1085541023408.

It is not an unprimeable number, because it can be changed into a prime (1085541083449) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 520947 + ... + 1562839.

Almost surely, 2^{1085541023449} is an apocalyptic number.

1085541023449 is the 1041893-rd square number.

1085541023449 is the 520947-th centered octagonal number.

It is an amenable number.

1085541023449 is a deficient number, since it is larger than the sum of its proper divisors (1041894).

1085541023449 is an frugal number, since it uses more digits than its factorization.

1085541023449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083786 (or 1041893 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 1085541023449 in words is "one trillion, eighty-five billion, five hundred forty-one million, twenty-three thousand, four hundred forty-nine".