1012009109 has 8 divisors (see below), whose sum is σ = 1037232000. Its totient is φ = 986812000.

The previous prime is 1012009073. The next prime is 1012009111. The reversal of 1012009109 is 9019002101.

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 1012009109 - 2²⁴ = 995231893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012009139) 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, 91142 + ... + 101640.

It is an arithmetic number, because the mean of its divisors is an integer number (129654000).

Almost surely, 2^1012009109 is an apocalyptic number.

It is an amenable number.

1012009109 is a deficient number, since it is larger than the sum of its proper divisors (25222891).

1012009109 is a wasteful number, since it uses less digits than its factorization.

1012009109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12891.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1012009109 is about 31812.0906103324. The cubic root of 1012009109 is about 1003.9871180947.

The spelling of 1012009109 in words is "one billion, twelve million, nine thousand, one hundred nine".