1154235011 has 4 divisors (see below), whose sum is σ = 1162539000. Its totient is φ = 1145931024.

The previous prime is 1154234981. The next prime is 1154235053. The reversal of 1154235011 is 1105324511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1105324511 = 5813 ⋅190147.

It is a cyclic number.

It is not a de Polignac number, because 1154235011 - 2¹⁰ = 1154233987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154235211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4151786 + ... + 4152063.

It is an arithmetic number, because the mean of its divisors is an integer number (290634750).

Almost surely, 2^1154235011 is an apocalyptic number.

1154235011 is a deficient number, since it is larger than the sum of its proper divisors (8303989).

1154235011 is an equidigital number, since it uses as much as digits as its factorization.

1154235011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303988.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1154235011 is about 33974.0343644967. The cubic root of 1154235011 is about 1048.9740579062.

Adding to 1154235011 its reverse (1105324511), we get a palindrome (2259559522).

The spelling of 1154235011 in words is "one billion, one hundred fifty-four million, two hundred thirty-five thousand, eleven".