1020805683 has 8 divisors (see below), whose sum is σ = 1361505168. Its totient is φ = 680321664.

The previous prime is 1020805673. The next prime is 1020805697. The reversal of 1020805683 is 3865080201.

It is a happy number.

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

It is not a de Polignac number, because 1020805683 - 2⁵ = 1020805651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020805633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42466 + ... + 62007.

It is an arithmetic number, because the mean of its divisors is an integer number (170188146).

Almost surely, 2^1020805683 is an apocalyptic number.

1020805683 is a deficient number, since it is larger than the sum of its proper divisors (340699485).

1020805683 is a wasteful number, since it uses less digits than its factorization.

1020805683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107733.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1020805683 is about 31950.0498121677. The cubic root of 1020805683 is about 1006.8876786323.

Adding to 1020805683 its reverse (3865080201), we get a palindrome (4885885884).

The spelling of 1020805683 in words is "one billion, twenty million, eight hundred five thousand, six hundred eighty-three".