3628777780 has 12 divisors (see below), whose sum is σ = 7620433380. Its totient is φ = 1451511104.

The previous prime is 3628777771. The next prime is 3628777807. The reversal of 3628777780 is 877778263.

It can be written as a sum of positive squares in 2 ways, for example, as 2788473636 + 840304144 = 52806^2 + 28988^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 90719425 + ... + 90719464.

It is an arithmetic number, because the mean of its divisors is an integer number (635036115).

Almost surely, 2^3628777780 is an apocalyptic number.

It is an amenable number.

3628777780 is an abundant number, since it is smaller than the sum of its proper divisors (3991655600).

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

3628777780 is a wasteful number, since it uses less digits than its factorization.

3628777780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181438898 (or 181438896 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 55.

The square root of 3628777780 is about 60239.3374797565. The cubic root of 3628777780 is about 1536.6918614630.

The spelling of 3628777780 in words is "three billion, six hundred twenty-eight million, seven hundred seventy-seven thousand, seven hundred eighty".