648151840 has 192 divisors, whose sum is σ = 1822383360. Its totient is φ = 213258240.

The previous prime is 648151837. The next prime is 648151849. The reversal of 648151840 is 48151846.

It is a self number, because there is not a number n which added to its sum of digits gives 648151840.

It is not an unprimeable number, because it can be changed into a prime (648151849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3620871 + ... + 3621049.

It is an arithmetic number, because the mean of its divisors is an integer number (9491580).

Almost surely, 2^648151840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648151840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911191680).

648151840 is an abundant number, since it is smaller than the sum of its proper divisors (1174231520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648151840 is a wasteful number, since it uses less digits than its factorization.

648151840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 648151840 is about 25458.8263672935. The cubic root of 648151840 is about 865.4173267746.

The spelling of 648151840 in words is "six hundred forty-eight million, one hundred fifty-one thousand, eight hundred forty".