3646738318 has 8 divisors (see below), whose sum is σ = 5470368120. Its totient is φ = 1823282280.

The previous prime is 3646738301. The next prime is 3646738331. The reversal of 3646738318 is 8138376463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 45213 + ... + 96631.

It is an arithmetic number, because the mean of its divisors is an integer number (683796015).

Almost surely, 2^3646738318 is an apocalyptic number.

3646738318 is a deficient number, since it is larger than the sum of its proper divisors (1823629802).

3646738318 is a wasteful number, since it uses less digits than its factorization.

3646738318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86882.

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

The square root of 3646738318 is about 60388.2299624687. The cubic root of 3646738318 is about 1539.2229618496. Note that the first 3 decimals are identical.

The spelling of 3646738318 in words is "three billion, six hundred forty-six million, seven hundred thirty-eight thousand, three hundred eighteen".