2549385180 has 72 divisors (see below), whose sum is σ = 7758170784. Its totient is φ = 677635200.

The previous prime is 2549385151. The next prime is 2549385191. The reversal of 2549385180 is 815839452.

2549385180 is a `hidden beast` number, since 2 + 5 + 493 + 85 + 1 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33210 + ... + 78750.

It is an arithmetic number, because the mean of its divisors is an integer number (107752372).

Almost surely, 2^2549385180 is an apocalyptic number.

2549385180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2549385180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3879085392).

2549385180 is an abundant number, since it is smaller than the sum of its proper divisors (5208785604).

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

2549385180 is a wasteful number, since it uses less digits than its factorization.

2549385180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45867 (or 45862 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 2549385180 is about 50491.4366997019. The cubic root of 2549385180 is about 1366.0873998272.

The spelling of 2549385180 in words is "two billion, five hundred forty-nine million, three hundred eighty-five thousand, one hundred eighty".