3778879789 has 12 divisors (see below), whose sum is σ = 3896003740. Its totient is φ = 3664281600.

The previous prime is 3778879787. The next prime is 3778879831. The reversal of 3778879789 is 9879788773.

It can be written as a sum of positive squares in 2 ways, for example, as 1378859689 + 2400020100 = 37133^2 + 48990^2 .

It is not a de Polignac number, because 3778879789 - 2¹ = 3778879787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778879781) 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, 301357 + ... + 313645.

Almost surely, 2^3778879789 is an apocalyptic number.

It is an amenable number.

3778879789 is a deficient number, since it is larger than the sum of its proper divisors (117123951).

3778879789 is an equidigital number, since it uses as much as digits as its factorization.

3778879789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12492 (or 12421 counting only the distinct ones).

The product of its digits is 298722816, while the sum is 73.

The square root of 3778879789 is about 61472.5938040685. The cubic root of 3778879789 is about 1557.5943346902.

The spelling of 3778879789 in words is "three billion, seven hundred seventy-eight million, eight hundred seventy-nine thousand, seven hundred eighty-nine".