1143653 has 8 divisors (see below), whose sum is σ = 1315200. Its totient is φ = 974160.

The previous prime is 1143647. The next prime is 1143661. The reversal of 1143653 is 3563411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1143653 - 2⁶ = 1143589 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 (1143643) 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 7 ways as a sum of consecutive naturals, for example, 983 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (164400).

2^1143653 is an apocalyptic number.

It is an amenable number.

1143653 is a deficient number, since it is larger than the sum of its proper divisors (171547).

1143653 is an equidigital number, since it uses as much as digits as its factorization.

1143653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027.

The product of its digits is 1080, while the sum is 23.

The square root of 1143653 is about 1069.4171309643. The cubic root of 1143653 is about 104.5758551219.

The spelling of 1143653 in words is "one million, one hundred forty-three thousand, six hundred fifty-three".