3985518201 has 24 divisors (see below), whose sum is σ = 6224964672. Its totient is φ = 2221872000.

The previous prime is 3985518197. The next prime is 3985518203. The reversal of 3985518201 is 1028155893.

It is not a de Polignac number, because 3985518201 - 2² = 3985518197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3985518203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21150 + ... + 91751.

It is an arithmetic number, because the mean of its divisors is an integer number (259373528).

Almost surely, 2^3985518201 is an apocalyptic number.

It is an amenable number.

3985518201 is a deficient number, since it is larger than the sum of its proper divisors (2239446471).

3985518201 is a wasteful number, since it uses less digits than its factorization.

3985518201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112993 (or 112952 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 3985518201 is about 63130.9607165929. The cubic root of 3985518201 is about 1585.4830334921.

The spelling of 3985518201 in words is "three billion, nine hundred eighty-five million, five hundred eighteen thousand, two hundred one".