3648378613 has 16 divisors (see below), whose sum is σ = 4192727040. Its totient is φ = 3139743600.

The previous prime is 3648378583. The next prime is 3648378641. The reversal of 3648378613 is 3168738463.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3648378613 - 2⁹ = 3648378101 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 (3648378113) 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, 301506 + ... + 313372.

It is an arithmetic number, because the mean of its divisors is an integer number (262045440).

Almost surely, 2^3648378613 is an apocalyptic number.

It is an amenable number.

3648378613 is a deficient number, since it is larger than the sum of its proper divisors (544348427).

3648378613 is a wasteful number, since it uses less digits than its factorization.

3648378613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13368.

The product of its digits is 1741824, while the sum is 49.

The square root of 3648378613 is about 60401.8096831544. The cubic root of 3648378613 is about 1539.4537069754.

The spelling of 3648378613 in words is "three billion, six hundred forty-eight million, three hundred seventy-eight thousand, six hundred thirteen".