3188380420 has 12 divisors (see below), whose sum is σ = 6695598924. Its totient is φ = 1275352160.

The previous prime is 3188380409. The next prime is 3188380427. The reversal of 3188380420 is 240838813.

It can be written as a sum of positive squares in 2 ways, for example, as 2362737664 + 825642756 = 48608^2 + 28734^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3188380420.

It is not an unprimeable number, because it can be changed into a prime (3188380427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79709491 + ... + 79709530.

It is an arithmetic number, because the mean of its divisors is an integer number (557966577).

Almost surely, 2^3188380420 is an apocalyptic number.

It is an amenable number.

3188380420 is an abundant number, since it is smaller than the sum of its proper divisors (3507218504).

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

3188380420 is a wasteful number, since it uses less digits than its factorization.

3188380420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159419030 (or 159419028 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 3188380420 is about 56465.7455454190. The cubic root of 3188380420 is about 1471.8268154642.

The spelling of 3188380420 in words is "three billion, one hundred eighty-eight million, three hundred eighty thousand, four hundred twenty".