3655381213 has 16 divisors (see below), whose sum is σ = 4119091200. Its totient is φ = 3213716400.

The previous prime is 3655381201. The next prime is 3655381217. The reversal of 3655381213 is 3121835563.

It is a cyclic number.

It is not a de Polignac number, because 3655381213 - 2²⁵ = 3621826781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655381217) 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 15 ways as a sum of consecutive naturals, for example, 713206 + ... + 718312.

It is an arithmetic number, because the mean of its divisors is an integer number (257443200).

Almost surely, 2^3655381213 is an apocalyptic number.

It is an amenable number.

3655381213 is a deficient number, since it is larger than the sum of its proper divisors (463709987).

3655381213 is a wasteful number, since it uses less digits than its factorization.

3655381213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248.

The product of its digits is 64800, while the sum is 37.

The square root of 3655381213 is about 60459.7487010987. The cubic root of 3655381213 is about 1540.4380062084.

The spelling of 3655381213 in words is "three billion, six hundred fifty-five million, three hundred eighty-one thousand, two hundred thirteen".