1648140000 has 240 divisors, whose sum is σ = 5824847952. Its totient is φ = 405504000.

The previous prime is 1648139989. The next prime is 1648140019. The reversal of 1648140000 is 418461.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 778944 + ... + 781056.

Almost surely, 2^1648140000 is an apocalyptic number.

1648140000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1648140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2912423976).

1648140000 is an abundant number, since it is smaller than the sum of its proper divisors (4176707952).

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

1648140000 is a wasteful number, since it uses less digits than its factorization.

1648140000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1648140000 is about 40597.2905499862. The cubic root of 1648140000 is about 1181.2215636614.

Adding to 1648140000 its reverse (418461), we get a palindrome (1648558461).

The spelling of 1648140000 in words is "one billion, six hundred forty-eight million, one hundred forty thousand".