1135646154889 has 3 divisors (see below), whose sum is σ = 1135647220557. Its totient is φ = 1135645089222.

The previous prime is 1135646154887. The next prime is 1135646154911. The reversal of 1135646154889 is 9884516465311.

The square root of 1135646154889 is 1065667.

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 is not a de Polignac number, because 1135646154889 - 2¹ = 1135646154887 is a prime.

It is a super-2 number, since 2×1135646154889² (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 (1135646154887) 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, 532834 + ... + 1598500.

It is an arithmetic number, because the mean of its divisors is an integer number (378549073519).

Almost surely, 2^{1135646154889} is an apocalyptic number.

1135646154889 is the 1065667-th square number.

1135646154889 is the 532834-th centered octagonal number.

It is an amenable number.

1135646154889 is a deficient number, since it is larger than the sum of its proper divisors (1065668).

1135646154889 is an frugal number, since it uses more digits than its factorization.

1135646154889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131334 (or 1065667 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 61.

The spelling of 1135646154889 in words is "one trillion, one hundred thirty-five billion, six hundred forty-six million, one hundred fifty-four thousand, eight hundred eighty-nine".