1020841856 has 16 divisors (see below), whose sum is σ = 2033708640. Its totient is φ = 510420864.

The previous prime is 1020841853. The next prime is 1020841859. The reversal of 1020841856 is 6581480201.

1020841856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1020841853) and next prime (1020841859).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020841853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3987536 + ... + 3987791.

It is an arithmetic number, because the mean of its divisors is an integer number (127106790).

Almost surely, 2^1020841856 is an apocalyptic number.

1020841856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1020841856 is a deficient number, since it is larger than the sum of its proper divisors (1012866784).

1020841856 is an frugal number, since it uses more digits than its factorization.

1020841856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7975341 (or 7975329 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 1020841856 is about 31950.6158939073. The cubic root of 1020841856 is about 1006.8995717602.

The spelling of 1020841856 in words is "one billion, twenty million, eight hundred forty-one thousand, eight hundred fifty-six".