1230552643 has 4 divisors (see below), whose sum is σ = 1230696928. Its totient is φ = 1230408360.

The previous prime is 1230552611. The next prime is 1230552703. The reversal of 1230552643 is 3462550321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3462550321 = 617 ⋅5611913.

It is a cyclic number.

It is not a de Polignac number, because 1230552643 - 2⁵ = 1230552611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230552143) 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, 58488 + ... + 76693.

It is an arithmetic number, because the mean of its divisors is an integer number (307674232).

Almost surely, 2^1230552643 is an apocalyptic number.

1230552643 is a deficient number, since it is larger than the sum of its proper divisors (144285).

1230552643 is an equidigital number, since it uses as much as digits as its factorization.

1230552643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144284.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1230552643 is about 35079.2337858169. The cubic root of 1230552643 is about 1071.6017130129.

The spelling of 1230552643 in words is "one billion, two hundred thirty million, five hundred fifty-two thousand, six hundred forty-three".