3656219938 has 8 divisors (see below), whose sum is σ = 6267805632. Its totient is φ = 1566951396.

The previous prime is 3656219899. The next prime is 3656219993. The reversal of 3656219938 is 8399126563.

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

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, 130579270 + ... + 130579297.

It is an arithmetic number, because the mean of its divisors is an integer number (783475704).

Almost surely, 2^3656219938 is an apocalyptic number.

3656219938 is a deficient number, since it is larger than the sum of its proper divisors (2611585694).

3656219938 is a wasteful number, since it uses less digits than its factorization.

3656219938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261158576.

The product of its digits is 2099520, while the sum is 52.

The square root of 3656219938 is about 60466.6845295821. The cubic root of 3656219938 is about 1540.5558147203. Note that the first 3 decimals are identical.

The spelling of 3656219938 in words is "three billion, six hundred fifty-six million, two hundred nineteen thousand, nine hundred thirty-eight".