1820010103909 has 16 divisors (see below), whose sum is σ = 2012159031552. Its totient is φ = 1637412150528.

The previous prime is 1820010103859. The next prime is 1820010103921. The reversal of 1820010103909 is 9093010100281.

It is a cyclic number.

It is not a de Polignac number, because 1820010103909 - 2⁹ = 1820010103397 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 (1820010103969) 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, 905034 + ... + 2111659.

It is an arithmetic number, because the mean of its divisors is an integer number (125759939472).

Almost surely, 2^{1820010103909} is an apocalyptic number.

It is an amenable number.

1820010103909 is a deficient number, since it is larger than the sum of its proper divisors (192148927643).

1820010103909 is a wasteful number, since it uses less digits than its factorization.

1820010103909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018276.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 1820010103909 in words is "one trillion, eight hundred twenty billion, ten million, one hundred three thousand, nine hundred nine".