1018404560 has 80 divisors (see below), whose sum is σ = 2572930560. Its totient is φ = 373455360.

The previous prime is 1018404553. The next prime is 1018404631. The reversal of 1018404560 is 654048101.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36314 + ... + 57926.

It is an arithmetic number, because the mean of its divisors is an integer number (32161632).

Almost surely, 2^1018404560 is an apocalyptic number.

1018404560 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 1018404560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286465280).

1018404560 is an abundant number, since it is smaller than the sum of its proper divisors (1554526000).

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

1018404560 is a wasteful number, since it uses less digits than its factorization.

1018404560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21676 (or 21670 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1018404560 is about 31912.4514884081. The cubic root of 1018404560 is about 1006.0975970723.

The spelling of 1018404560 in words is "one billion, eighteen million, four hundred four thousand, five hundred sixty".