4031781604 has 12 divisors (see below), whose sum is σ = 7058332204. Its totient is φ = 2015115264.

The previous prime is 4031781577. The next prime is 4031781643. The reversal of 4031781604 is 4061871304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3794560000 + 237221604 = 61600^2 + 15402^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4031781604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182109 + ... + 203044.

Almost surely, 2^4031781604 is an apocalyptic number.

It is an amenable number.

4031781604 is a deficient number, since it is larger than the sum of its proper divisors (3026550600).

4031781604 is a wasteful number, since it uses less digits than its factorization.

4031781604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387774 (or 387772 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4031781604 is about 63496.3117354071. The cubic root of 4031781604 is about 1591.5941455306.

The spelling of 4031781604 in words is "four billion, thirty-one million, seven hundred eighty-one thousand, six hundred four".