1021306850 has 12 divisors (see below), whose sum is σ = 1899630834. Its totient is φ = 408522720.

The previous prime is 1021306801. The next prime is 1021306859. The reversal of 1021306850 is 586031201.

It can be written as a sum of positive squares in 3 ways, for example, as 833534641 + 187772209 = 28871^2 + 13703^2 .

It is not an unprimeable number, because it can be changed into a prime (1021306859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10213019 + ... + 10213118.

Almost surely, 2^1021306850 is an apocalyptic number.

1021306850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021306850 is a deficient number, since it is larger than the sum of its proper divisors (878323984).

1021306850 is a wasteful number, since it uses less digits than its factorization.

1021306850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20426149 (or 20426144 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1021306850 is about 31957.8918265896. The cubic root of 1021306850 is about 1007.0524296477.

The spelling of 1021306850 in words is "one billion, twenty-one million, three hundred six thousand, eight hundred fifty".