1153332643 has 4 divisors (see below), whose sum is σ = 1153821448. Its totient is φ = 1152843840.

The previous prime is 1153332641. The next prime is 1153332647. The reversal of 1153332643 is 3462333511.

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 1153332643 - 2¹ = 1153332641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153332641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240846 + ... + 245587.

It is an arithmetic number, because the mean of its divisors is an integer number (288455362).

Almost surely, 2^1153332643 is an apocalyptic number.

1153332643 is a deficient number, since it is larger than the sum of its proper divisors (488805).

1153332643 is an equidigital number, since it uses as much as digits as its factorization.

1153332643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488804.

The product of its digits is 19440, while the sum is 31.

The square root of 1153332643 is about 33960.7515081748. The cubic root of 1153332643 is about 1048.7006279169.

The spelling of 1153332643 in words is "one billion, one hundred fifty-three million, three hundred thirty-two thousand, six hundred forty-three".