3938813650 has 24 divisors (see below), whose sum is σ = 7351224804. Its totient is φ = 1570142400.

The previous prime is 3938813633. The next prime is 3938813689. The reversal of 3938813650 is 563188393.

3938813650 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 6 ways, for example, as 2323336401 + 1615477249 = 48201^2 + 40193^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3938813650.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119781 + ... + 149080.

Almost surely, 2^3938813650 is an apocalyptic number.

3938813650 is a deficient number, since it is larger than the sum of its proper divisors (3412411154).

3938813650 is a wasteful number, since it uses less digits than its factorization.

3938813650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269166 (or 269161 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 3938813650 is about 62759.9685309035. The cubic root of 3938813650 is about 1579.2654880534.

The spelling of 3938813650 in words is "three billion, nine hundred thirty-eight million, eight hundred thirteen thousand, six hundred fifty".