648541388 has 12 divisors (see below), whose sum is σ = 1238124552. Its totient is φ = 294791520.

The previous prime is 648541379. The next prime is 648541429. The reversal of 648541388 is 883145846.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 7369745 + ... + 7369832.

It is an arithmetic number, because the mean of its divisors is an integer number (103177046).

Almost surely, 2^648541388 is an apocalyptic number.

It is an amenable number.

648541388 is a deficient number, since it is larger than the sum of its proper divisors (589583164).

648541388 is a wasteful number, since it uses less digits than its factorization.

648541388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14739592 (or 14739590 counting only the distinct ones).

The product of its digits is 737280, while the sum is 47.

The square root of 648541388 is about 25466.4757671728. The cubic root of 648541388 is about 865.5906678821.

The spelling of 648541388 in words is "six hundred forty-eight million, five hundred forty-one thousand, three hundred eighty-eight".