1165454111844 has 135 divisors (see below), whose sum is σ = 3242770529635. Its totient is φ = 352930409040.

The previous prime is 1165454111831. The next prime is 1165454111849. The reversal of 1165454111844 is 4481114545611.

It is a happy number.

The square root of 1165454111844 is 1079562.

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

1165454111844 is a `hidden beast` number, since 1 + 1 + 6 + 5 + 454 + 11 + 184 + 4 = 666.

It is a super-2 number, since 2×1165454111844² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165454111844.

It is not an unprimeable number, because it can be changed into a prime (1165454111849) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 783761269 + ... + 783762755.

Almost surely, 2^{1165454111844} is an apocalyptic number.

1165454111844 is the 1079562-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165454111844

1165454111844 is an abundant number, since it is smaller than the sum of its proper divisors (2077316417791).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165454111844 is an frugal number, since it uses more digits than its factorization.

1165454111844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028 (or 1503 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The spelling of 1165454111844 in words is "one trillion, one hundred sixty-five billion, four hundred fifty-four million, one hundred eleven thousand, eight hundred forty-four".