1016945280 has 384 divisors, whose sum is σ = 3929627520. Its totient is φ = 249827328.

The previous prime is 1016945269. The next prime is 1016945309. The reversal of 1016945280 is 825496101.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2021509 + ... + 2022011.

It is an arithmetic number, because the mean of its divisors is an integer number (10233405).

Almost surely, 2^1016945280 is an apocalyptic number.

1016945280 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 1016945280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964813760).

1016945280 is an abundant number, since it is smaller than the sum of its proper divisors (2912682240).

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

1016945280 is an equidigital number, since it uses as much as digits as its factorization.

1016945280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1016945280 is about 31889.5794892313. The cubic root of 1016945280 is about 1005.6168189439.

The spelling of 1016945280 in words is "one billion, sixteen million, nine hundred forty-five thousand, two hundred eighty".