648411338 has 4 divisors (see below), whose sum is σ = 972617010. Its totient is φ = 324205668.

The previous prime is 648411311. The next prime is 648411349. The reversal of 648411338 is 833114846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 625150009 + 23261329 = 25003^2 + 4823^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162102833 + ... + 162102836.

Almost surely, 2^648411338 is an apocalyptic number.

648411338 is a deficient number, since it is larger than the sum of its proper divisors (324205672).

648411338 is a wasteful number, since it uses less digits than its factorization.

648411338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324205671.

The product of its digits is 55296, while the sum is 38.

The square root of 648411338 is about 25463.9222823194. The cubic root of 648411338 is about 865.5328059405.

The spelling of 648411338 in words is "six hundred forty-eight million, four hundred eleven thousand, three hundred thirty-eight".