3640612135 has 32 divisors (see below), whose sum is σ = 4961165760. Its totient is φ = 2547836928.

The previous prime is 3640612123. The next prime is 3640612141. The reversal of 3640612135 is 5312160463.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640612135 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3640612097 and 3640612106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64329 + ... + 106861.

It is an arithmetic number, because the mean of its divisors is an integer number (155036430).

Almost surely, 2^3640612135 is an apocalyptic number.

3640612135 is a deficient number, since it is larger than the sum of its proper divisors (1320553625).

3640612135 is a wasteful number, since it uses less digits than its factorization.

3640612135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42627.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3640612135 is about 60337.4853221445. The cubic root of 3640612135 is about 1538.3605613594.

Adding to 3640612135 its reverse (5312160463), we get a palindrome (8952772598).

The spelling of 3640612135 in words is "three billion, six hundred forty million, six hundred twelve thousand, one hundred thirty-five".