1009857505 has 8 divisors (see below), whose sum is σ = 1275609600. Its totient is φ = 765365616.

The previous prime is 1009857491. The next prime is 1009857509. The reversal of 1009857505 is 5057589001.

1009857505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009857505 - 2⁷ = 1009857377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009857509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5314945 + ... + 5315134.

It is an arithmetic number, because the mean of its divisors is an integer number (159451200).

Almost surely, 2^1009857505 is an apocalyptic number.

It is an amenable number.

1009857505 is a deficient number, since it is larger than the sum of its proper divisors (265752095).

1009857505 is a wasteful number, since it uses less digits than its factorization.

1009857505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10630103.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 1009857505 is about 31778.2552227148. The cubic root of 1009857505 is about 1003.2750970296.

The spelling of 1009857505 in words is "one billion, nine million, eight hundred fifty-seven thousand, five hundred five".