1020868235 has 4 divisors (see below), whose sum is σ = 1225041888. Its totient is φ = 816694584.

The previous prime is 1020868229. The next prime is 1020868243. The reversal of 1020868235 is 5328680201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5328680201 = 13 ⋅409898477.

It is a cyclic number.

It is not a de Polignac number, because 1020868235 - 2⁶ = 1020868171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020868195 and 1020868204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102086819 + ... + 102086828.

It is an arithmetic number, because the mean of its divisors is an integer number (306260472).

Almost surely, 2^1020868235 is an apocalyptic number.

1020868235 is a deficient number, since it is larger than the sum of its proper divisors (204173653).

1020868235 is an equidigital number, since it uses as much as digits as its factorization.

1020868235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204173652.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1020868235 is about 31951.0287001843. The cubic root of 1020868235 is about 1006.9082445940.

The spelling of 1020868235 in words is "one billion, twenty million, eight hundred sixty-eight thousand, two hundred thirty-five".