1009382020 has 12 divisors (see below), whose sum is σ = 2119702284. Its totient is φ = 403752800.

The previous prime is 1009382009. The next prime is 1009382053. The reversal of 1009382020 is 202839001.

It can be written as a sum of positive squares in 2 ways, for example, as 210076036 + 799305984 = 14494^2 + 28272^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25234531 + ... + 25234570.

It is an arithmetic number, because the mean of its divisors is an integer number (176641857).

Almost surely, 2^1009382020 is an apocalyptic number.

1009382020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009382020 is an abundant number, since it is smaller than the sum of its proper divisors (1110320264).

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

1009382020 is a wasteful number, since it uses less digits than its factorization.

1009382020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50469110 (or 50469108 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1009382020 is about 31770.7730469373. The cubic root of 1009382020 is about 1003.1176104048.

The spelling of 1009382020 in words is "one billion, nine million, three hundred eighty-two thousand, twenty".