2051772180 has 48 divisors (see below), whose sum is σ = 5809527360. Its totient is φ = 540990208.

The previous prime is 2051772131. The next prime is 2051772197. The reversal of 2051772180 is 812771502.

2051772180 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186774 + ... + 197453.

It is an arithmetic number, because the mean of its divisors is an integer number (121031820).

Almost surely, 2^2051772180 is an apocalyptic number.

2051772180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051772180 is an abundant number, since it is smaller than the sum of its proper divisors (3757755180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051772180 is a wasteful number, since it uses less digits than its factorization.

2051772180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384328 (or 384326 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 2051772180 is about 45296.4919171452. The cubic root of 2051772180 is about 1270.7000459858.

The spelling of 2051772180 in words is "two billion, fifty-one million, seven hundred seventy-two thousand, one hundred eighty".