3197778128 has 40 divisors (see below), whose sum is σ = 6525832320. Its totient is φ = 1513797120.

The previous prime is 3197778121. The next prime is 3197778131. The reversal of 3197778128 is 8218777913.

3197778128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3197778128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3197778121) 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, 878873 + ... + 882503.

It is an arithmetic number, because the mean of its divisors is an integer number (163145808).

Almost surely, 2^3197778128 is an apocalyptic number.

3197778128 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3197778128 is an abundant number, since it is smaller than the sum of its proper divisors (3328054192).

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

3197778128 is a wasteful number, since it uses less digits than its factorization.

3197778128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555 (or 6549 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 53.

The square root of 3197778128 is about 56548.9003252937. The cubic root of 3197778128 is about 1473.2714602209.

The spelling of 3197778128 in words is "three billion, one hundred ninety-seven million, seven hundred seventy-eight thousand, one hundred twenty-eight".