1012858009 has 4 divisors (see below), whose sum is σ = 1045530880. Its totient is φ = 980185140.

The previous prime is 1012857983. The next prime is 1012858051. The reversal of 1012858009 is 9008582101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9008582101 = 1201 ⋅7500901.

It is a cyclic number.

It is not a de Polignac number, because 1012858009 - 2⁹ = 1012857497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012858109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16336389 + ... + 16336450.

It is an arithmetic number, because the mean of its divisors is an integer number (261382720).

Almost surely, 2^1012858009 is an apocalyptic number.

It is an amenable number.

1012858009 is a deficient number, since it is larger than the sum of its proper divisors (32672871).

1012858009 is an equidigital number, since it uses as much as digits as its factorization.

1012858009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32672870.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 1012858009 is about 31825.4302249003. The cubic root of 1012858009 is about 1004.2677632858.

The spelling of 1012858009 in words is "one billion, twelve million, eight hundred fifty-eight thousand, nine".