3985203520 has 28 divisors (see below), whose sum is σ = 9489766644. Its totient is φ = 1594081280.

The previous prime is 3985203487. The next prime is 3985203559. The reversal of 3985203520 is 253025893.

It can be written as a sum of positive squares in 2 ways, for example, as 2606715136 + 1378488384 = 51056^2 + 37128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3985203520.

It is a congruent number.

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, 6226561 + ... + 6227200.

Almost surely, 2^3985203520 is an apocalyptic number.

It is an amenable number.

3985203520 is an abundant number, since it is smaller than the sum of its proper divisors (5504563124).

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

3985203520 is a wasteful number, since it uses less digits than its factorization.

3985203520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12453778 (or 12453768 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 3985203520 is about 63128.4683799631. The cubic root of 3985203520 is about 1585.4413045380.

The spelling of 3985203520 in words is "three billion, nine hundred eighty-five million, two hundred three thousand, five hundred twenty".