3778556789 has 8 divisors (see below), whose sum is σ = 4319007168. Its totient is φ = 3238270560.

The previous prime is 3778556783. The next prime is 3778556839. The reversal of 3778556789 is 9876558773.

3778556789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3778556789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778556783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13049 + ... + 87905.

It is an arithmetic number, because the mean of its divisors is an integer number (539875896).

Almost surely, 2^3778556789 is an apocalyptic number.

It is an amenable number.

3778556789 is a deficient number, since it is larger than the sum of its proper divisors (540450379).

3778556789 is an equidigital number, since it uses as much as digits as its factorization.

3778556789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82075.

The product of its digits is 88905600, while the sum is 65.

The square root of 3778556789 is about 61469.9665609149. The cubic root of 3778556789 is about 1557.5499549328.

The spelling of 3778556789 in words is "three billion, seven hundred seventy-eight million, five hundred fifty-six thousand, seven hundred eighty-nine".