1648128870 has 80 divisors (see below), whose sum is σ = 4584515760. Its totient is φ = 424339776.

The previous prime is 1648128827. The next prime is 1648128887. The reversal of 1648128870 is 788218461.

1648128870 is digitally balanced in base 4, 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 (45).

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, 11592 + ... + 58571.

It is an arithmetic number, because the mean of its divisors is an integer number (57306447).

Almost surely, 2^1648128870 is an apocalyptic number.

1648128870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648128870 is an abundant number, since it is smaller than the sum of its proper divisors (2936386890).

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

1648128870 is a wasteful number, since it uses less digits than its factorization.

1648128870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70211 (or 70202 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1648128870 is about 40597.1534716413. The cubic root of 1648128870 is about 1181.2189046992.

The spelling of 1648128870 in words is "one billion, six hundred forty-eight million, one hundred twenty-eight thousand, eight hundred seventy".