2180788651 has 12 divisors (see below), whose sum is σ = 2262633912. Its totient is φ = 2101800000.

The previous prime is 2180788637. The next prime is 2180788691. The reversal of 2180788651 is 1568870812.

2180788651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2180788651 - 2⁷ = 2180788523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2180788691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236691 + ... + 245731.

It is an arithmetic number, because the mean of its divisors is an integer number (188552826).

Almost surely, 2^2180788651 is an apocalyptic number.

2180788651 is a deficient number, since it is larger than the sum of its proper divisors (81845261).

2180788651 is an equidigital number, since it uses as much as digits as its factorization.

2180788651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9354 (or 9323 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 46.

The square root of 2180788651 is about 46698.9148803267. The cubic root of 2180788651 is about 1296.7945982233.

The spelling of 2180788651 in words is "two billion, one hundred eighty million, seven hundred eighty-eight thousand, six hundred fifty-one".