1143353605 has 4 divisors (see below), whose sum is σ = 1372024332. Its totient is φ = 914682880.

The previous prime is 1143353591. The next prime is 1143353609. The reversal of 1143353605 is 5063533411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 142706916 + 1000646689 = 11946^2 + 31633^2 .

It is not a de Polignac number, because 1143353605 - 2¹⁵ = 1143320837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143353609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114335356 + ... + 114335365.

It is an arithmetic number, because the mean of its divisors is an integer number (343006083).

Almost surely, 2^1143353605 is an apocalyptic number.

It is an amenable number.

1143353605 is a deficient number, since it is larger than the sum of its proper divisors (228670727).

1143353605 is an equidigital number, since it uses as much as digits as its factorization.

1143353605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228670726.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 1143353605 is about 33813.5121659966. The cubic root of 1143353605 is about 1045.6672874624.

The spelling of 1143353605 in words is "one billion, one hundred forty-three million, three hundred fifty-three thousand, six hundred five".