648011910 has 288 divisors, whose sum is σ = 2093402880. Its totient is φ = 125349120.

The previous prime is 648011893. The next prime is 648011939. The reversal of 648011910 is 19110846.

648011910 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20903595 + ... + 20903625.

It is an arithmetic number, because the mean of its divisors is an integer number (7268760).

Almost surely, 2^648011910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648011910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1046701440).

648011910 is an abundant number, since it is smaller than the sum of its proper divisors (1445390970).

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

648011910 is a wasteful number, since it uses less digits than its factorization.

648011910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 648011910 is about 25456.0780561343. The cubic root of 648011910 is about 865.3550437546.

The spelling of 648011910 in words is "six hundred forty-eight million, eleven thousand, nine hundred ten".