1780648068 has 48 divisors (see below), whose sum is σ = 4414616640. Its totient is φ = 558616192.

The previous prime is 1780648031. The next prime is 1780648073. The reversal of 1780648068 is 8608460871.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43855 + ... + 74057.

It is an arithmetic number, because the mean of its divisors is an integer number (91971180).

Almost surely, 2^1780648068 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 1780648068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207308320).

1780648068 is an abundant number, since it is smaller than the sum of its proper divisors (2633968572).

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

1780648068 is a wasteful number, since it uses less digits than its factorization.

1780648068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30261 (or 30225 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 1780648068 is about 42197.7258628946. The cubic root of 1780648068 is about 1212.0653359326.

The spelling of 1780648068 in words is "one billion, seven hundred eighty million, six hundred forty-eight thousand, sixty-eight".