2180190789 has 32 divisors (see below), whose sum is σ = 3908471040. Its totient is φ = 1172537856.

The previous prime is 2180190781. The next prime is 2180190799. The reversal of 2180190789 is 9870910812.

It is not a de Polignac number, because 2180190789 - 2³ = 2180190781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180190781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336064 + ... + 342489.

It is an arithmetic number, because the mean of its divisors is an integer number (122139720).

Almost surely, 2^2180190789 is an apocalyptic number.

It is an amenable number.

2180190789 is a deficient number, since it is larger than the sum of its proper divisors (1728280251).

2180190789 is a wasteful number, since it uses less digits than its factorization.

2180190789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678586 (or 678580 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 2180190789 is about 46692.5132007263. The cubic root of 2180190789 is about 1296.6760822188.

The spelling of 2180190789 in words is "two billion, one hundred eighty million, one hundred ninety thousand, seven hundred eighty-nine".