3889499780 has 12 divisors (see below), whose sum is σ = 8167949580. Its totient is φ = 1555799904.

The previous prime is 3889499773. The next prime is 3889499797. The reversal of 3889499780 is 879949883.

3889499780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2903916544 + 985583236 = 53888^2 + 31394^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97237475 + ... + 97237514.

It is an arithmetic number, because the mean of its divisors is an integer number (680662465).

Almost surely, 2^3889499780 is an apocalyptic number.

It is an amenable number.

3889499780 is an abundant number, since it is smaller than the sum of its proper divisors (4278449800).

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

3889499780 is a wasteful number, since it uses less digits than its factorization.

3889499780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194474998 (or 194474996 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 65.

The square root of 3889499780 is about 62365.8542794052. The cubic root of 3889499780 is about 1572.6469985747.

The spelling of 3889499780 in words is "three billion, eight hundred eighty-nine million, four hundred ninety-nine thousand, seven hundred eighty".