1153724423 has 4 divisors (see below), whose sum is σ = 1154510208. Its totient is φ = 1152938640.

The previous prime is 1153724419. The next prime is 1153724437. The reversal of 1153724423 is 3244273511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1153724423 - 2² = 1153724419 is a prime.

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 1153724423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153724483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390686 + ... + 393627.

It is an arithmetic number, because the mean of its divisors is an integer number (288627552).

Almost surely, 2^1153724423 is an apocalyptic number.

1153724423 is a deficient number, since it is larger than the sum of its proper divisors (785785).

1153724423 is an equidigital number, since it uses as much as digits as its factorization.

1153724423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785784.

The product of its digits is 20160, while the sum is 32.

The square root of 1153724423 is about 33966.5191475370. The cubic root of 1153724423 is about 1048.8193601899.

Adding to 1153724423 its reverse (3244273511), we get a palindrome (4397997934).

The spelling of 1153724423 in words is "one billion, one hundred fifty-three million, seven hundred twenty-four thousand, four hundred twenty-three".