3538607985 has 128 divisors (see below), whose sum is σ = 7166361600. Its totient is φ = 1640943360.

The previous prime is 3538607981. The next prime is 3538607999. The reversal of 3538607985 is 5897068353.

It is a happy number.

It is not a de Polignac number, because 3538607985 - 2² = 3538607981 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3538607981) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5468932 + ... + 5469578.

It is an arithmetic number, because the mean of its divisors is an integer number (55987200).

Almost surely, 2^3538607985 is an apocalyptic number.

It is an amenable number.

3538607985 is an abundant number, since it is smaller than the sum of its proper divisors (3627753615).

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

3538607985 is a wasteful number, since it uses less digits than its factorization.

3538607985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The square root of 3538607985 is about 59486.1999542751. The cubic root of 3538607985 is about 1523.8567778793.

The spelling of 3538607985 in words is "three billion, five hundred thirty-eight million, six hundred seven thousand, nine hundred eighty-five".