3652218578 has 18 divisors (see below), whose sum is σ = 5534404407. Its totient is φ = 1807605900.

The previous prime is 3652218527. The next prime is 3652218601. The reversal of 3652218578 is 8758122563.

It can be written as a sum of positive squares in only one way, i.e., 1826109289 + 1826109289 = 42733^2 + 42733^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=42733.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 12905225 + ... + 12905507.

Almost surely, 2^3652218578 is an apocalyptic number.

3652218578 is a deficient number, since it is larger than the sum of its proper divisors (1882185829).

3652218578 is an frugal number, since it uses more digits than its factorization.

3652218578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 436 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The square root of 3652218578 is about 60433.5881608895. The cubic root of 3652218578 is about 1539.9936158166.

The spelling of 3652218578 in words is "three billion, six hundred fifty-two million, two hundred eighteen thousand, five hundred seventy-eight".