3968218250 has 16 divisors (see below), whose sum is σ = 7428505032. Its totient is φ = 1587287200.

The previous prime is 3968218249. The next prime is 3968218253. The reversal of 3968218250 is 528128693.

It can be written as a sum of positive squares in 4 ways, for example, as 1968608161 + 1999610089 = 44369^2 + 44717^2 .

It is not an unprimeable number, because it can be changed into a prime (3968218253) 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, 7936187 + ... + 7936686.

Almost surely, 2^3968218250 is an apocalyptic number.

3968218250 is a deficient number, since it is larger than the sum of its proper divisors (3460286782).

3968218250 is a wasteful number, since it uses less digits than its factorization.

3968218250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15872890 (or 15872880 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 3968218250 is about 62993.7953293814. The cubic root of 3968218250 is about 1583.1856692084.

The spelling of 3968218250 in words is "three billion, nine hundred sixty-eight million, two hundred eighteen thousand, two hundred fifty".