1153111145 has 8 divisors (see below), whose sum is σ = 1399281480. Its totient is φ = 912123520.

The previous prime is 1153111081. The next prime is 1153111147. The reversal of 1153111145 is 5411113511.

It can be written as a sum of positive squares in 4 ways, for example, as 712336 + 1152398809 = 844^2 + 33947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1153111145 - 2⁶ = 1153111081 is a prime.

It is a super-2 number, since 2×1153111145² = 2659330625446422050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153111145.

It is not an unprimeable number, because it can be changed into a prime (1153111147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295186 + ... + 1296075.

It is an arithmetic number, because the mean of its divisors is an integer number (174910185).

Almost surely, 2^1153111145 is an apocalyptic number.

It is an amenable number.

1153111145 is a deficient number, since it is larger than the sum of its proper divisors (246170335).

1153111145 is an equidigital number, since it uses as much as digits as its factorization.

1153111145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591355.

The product of its digits is 300, while the sum is 23.

The square root of 1153111145 is about 33957.4902635634. The cubic root of 1153111145 is about 1048.6334891590.

Adding to 1153111145 its reverse (5411113511), we get a palindrome (6564224656).

The spelling of 1153111145 in words is "one billion, one hundred fifty-three million, one hundred eleven thousand, one hundred forty-five".