1192553545681 has 3 divisors (see below), whose sum is σ = 1192554637723. Its totient is φ = 1192552453640.

The previous prime is 1192553545679. The next prime is 1192553545753. The reversal of 1192553545681 is 1865453552911.

It is a happy number.

The square root of 1192553545681 is 1092041.

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., 1192483656081 + 69889600 = 1092009^2 + 8360^2 .

It is not a de Polignac number, because 1192553545681 - 2¹ = 1192553545679 is a prime.

It is a super-2 number, since 2×1192553545681² (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 (1192553045681) 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, 546021 + ... + 1638061.

Almost surely, 2^{1192553545681} is an apocalyptic number.

1192553545681 is the 1092041-st square number.

1192553545681 is the 546021-st centered octagonal number.

It is an amenable number.

1192553545681 is a deficient number, since it is larger than the sum of its proper divisors (1092042).

1192553545681 is an frugal number, since it uses more digits than its factorization.

1192553545681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184082 (or 1092041 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 55.

The spelling of 1192553545681 in words is "one trillion, one hundred ninety-two billion, five hundred fifty-three million, five hundred forty-five thousand, six hundred eighty-one".