1840820658009 has 32 divisors (see below), whose sum is σ = 2589047884800. Its totient is φ = 1161089265600.

The previous prime is 1840820657999. The next prime is 1840820658037. The reversal of 1840820658009 is 9008560280481.

It is not a de Polignac number, because 1840820658009 - 2⁴ = 1840820657993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1840820656009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6971802 + ... + 7231020.

It is an arithmetic number, because the mean of its divisors is an integer number (80907746400).

Almost surely, 2^{1840820658009} is an apocalyptic number.

It is an amenable number.

1840820658009 is a deficient number, since it is larger than the sum of its proper divisors (748227226791).

1840820658009 is a wasteful number, since it uses less digits than its factorization.

1840820658009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260365.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 1840820658009 in words is "one trillion, eight hundred forty billion, eight hundred twenty million, six hundred fifty-eight thousand, nine".