3531259985 has 16 divisors (see below), whose sum is σ = 4623894720. Its totient is φ = 2567547840.

The previous prime is 3531259981. The next prime is 3531259993. The reversal of 3531259985 is 5899521353.

It is not a de Polignac number, because 3531259985 - 2² = 3531259981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3531259981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424274 + ... + 432516.

It is an arithmetic number, because the mean of its divisors is an integer number (288993420).

Almost surely, 2^3531259985 is an apocalyptic number.

It is an amenable number.

3531259985 is a deficient number, since it is larger than the sum of its proper divisors (1092634735).

3531259985 is a wasteful number, since it uses less digits than its factorization.

3531259985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16048.

The product of its digits is 1458000, while the sum is 50.

The square root of 3531259985 is about 59424.4056343856. The cubic root of 3531259985 is about 1522.8012725236.

The spelling of 3531259985 in words is "three billion, five hundred thirty-one million, two hundred fifty-nine thousand, nine hundred eighty-five".