1909182020009 has 16 divisors (see below), whose sum is σ = 2202752520960. Its totient is φ = 1636478802000.

The previous prime is 1909182020003. The next prime is 1909182020033. The reversal of 1909182020009 is 9000202819091.

It is a cyclic number.

It is not a de Polignac number, because 1909182020009 - 2⁴ = 1909182019993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1909182020003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21602447 + ... + 21690644.

It is an arithmetic number, because the mean of its divisors is an integer number (137672032560).

Almost surely, 2^{1909182020009} is an apocalyptic number.

1909182020009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1909182020009 is a deficient number, since it is larger than the sum of its proper divisors (293570500951).

1909182020009 is a wasteful number, since it uses less digits than its factorization.

1909182020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43293332.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 1909182020009 in words is "one trillion, nine hundred nine billion, one hundred eighty-two million, twenty thousand, nine".