1020643193 has 4 divisors (see below), whose sum is σ = 1065019008. Its totient is φ = 976267380.

The previous prime is 1020643177. The next prime is 1020643201. The reversal of 1020643193 is 3913460201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020643193 - 2⁴ = 1020643177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020643133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22187873 + ... + 22187918.

It is an arithmetic number, because the mean of its divisors is an integer number (266254752).

Almost surely, 2^1020643193 is an apocalyptic number.

It is an amenable number.

1020643193 is a deficient number, since it is larger than the sum of its proper divisors (44375815).

1020643193 is an equidigital number, since it uses as much as digits as its factorization.

1020643193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44375814.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1020643193 is about 31947.5068354324. The cubic root of 1020643193 is about 1006.8342509449.

The spelling of 1020643193 in words is "one billion, twenty million, six hundred forty-three thousand, one hundred ninety-three".