3695985531 has 28 divisors (see below), whose sum is σ = 6333086832. Its totient is φ = 2111988816.

The previous prime is 3695985499. The next prime is 3695985539. The reversal of 3695985531 is 1355895963.

It is a happy number.

3695985531 is a `hidden beast` number, since 36 + 9 + 59 + 8 + 553 + 1 = 666.

It is not a de Polignac number, because 3695985531 - 2⁵ = 3695985499 is a prime.

It is a super-2 number, since 2×3695985531² = 27320618090722703922, which contains 22 as substring.

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 (3695985539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 357036 + ... + 367241.

Almost surely, 2^3695985531 is an apocalyptic number.

3695985531 is a deficient number, since it is larger than the sum of its proper divisors (2637101301).

3695985531 is an frugal number, since it uses more digits than its factorization.

3695985531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724302 (or 724287 counting only the distinct ones).

The product of its digits is 4374000, while the sum is 54.

The square root of 3695985531 is about 60794.6176153778. The cubic root of 3695985531 is about 1546.1207929274.

The spelling of 3695985531 in words is "three billion, six hundred ninety-five million, nine hundred eighty-five thousand, five hundred thirty-one".