1018778560 has 112 divisors (see below), whose sum is σ = 2551176000. Its totient is φ = 386760704.

The previous prime is 1018778557. The next prime is 1018778573. The reversal of 1018778560 is 658778101.

1018778560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 1096176 + ... + 1097104.

Almost surely, 2^1018778560 is an apocalyptic number.

1018778560 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 1018778560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275588000).

1018778560 is an abundant number, since it is smaller than the sum of its proper divisors (1532397440).

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

1018778560 is a wasteful number, since it uses less digits than its factorization.

1018778560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 43.

The square root of 1018778560 is about 31918.3107322427. The cubic root of 1018778560 is about 1006.2207421248.

The spelling of 1018778560 in words is "one billion, eighteen million, seven hundred seventy-eight thousand, five hundred sixty".