3836615661 has 12 divisors (see below), whose sum is σ = 5543618080. Its totient is φ = 2556894600.

The previous prime is 3836615633. The next prime is 3836615669. The reversal of 3836615661 is 1665166383.

3836615661 is a `hidden beast` number, since 3 + 83 + 6 + 6 + 1 + 566 + 1 = 666.

It is not a de Polignac number, because 3836615661 - 2¹³ = 3836607469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3836615669) 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 11 ways as a sum of consecutive naturals, for example, 41515 + ... + 96936.

Almost surely, 2^3836615661 is an apocalyptic number.

It is an amenable number.

3836615661 is a deficient number, since it is larger than the sum of its proper divisors (1707002419).

3836615661 is a wasteful number, since it uses less digits than its factorization.

3836615661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141536 (or 141533 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 3836615661 is about 61940.4202520454. The cubic root of 3836615661 is about 1565.4868782211.

The spelling of 3836615661 in words is "three billion, eight hundred thirty-six million, six hundred fifteen thousand, six hundred sixty-one".