1020461805 has 48 divisors (see below), whose sum is σ = 2043123264. Its totient is φ = 465661440.

The previous prime is 1020461801. The next prime is 1020461809. The reversal of 1020461805 is 5081640201.

It is an interprime number because it is at equal distance from previous prime (1020461801) and next prime (1020461809).

It is not a de Polignac number, because 1020461805 - 2² = 1020461801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020461801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52219 + ... + 69048.

It is an arithmetic number, because the mean of its divisors is an integer number (42565068).

Almost surely, 2^1020461805 is an apocalyptic number.

1020461805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020461805 is an abundant number, since it is smaller than the sum of its proper divisors (1022661459).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020461805 is a wasteful number, since it uses less digits than its factorization.

1020461805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121306 (or 121303 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1020461805 is about 31944.6678649192. The cubic root of 1020461805 is about 1006.7746027831.

The spelling of 1020461805 in words is "one billion, twenty million, four hundred sixty-one thousand, eight hundred five".