4018728560 has 160 divisors (see below), whose sum is σ = 11681252352. Its totient is φ = 1249136640.

The previous prime is 4018728559. The next prime is 4018728587. The reversal of 4018728560 is 658278104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3097832 + ... + 3099128.

Almost surely, 2^4018728560 is an apocalyptic number.

4018728560 is a gapful number since it is divisible by the number (40) 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 4018728560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5840626176).

4018728560 is an abundant number, since it is smaller than the sum of its proper divisors (7662523792).

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

4018728560 is a wasteful number, since it uses less digits than its factorization.

4018728560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831 (or 1825 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 4018728560 is about 63393.4425630916. The cubic root of 4018728560 is about 1589.8746733490.

The spelling of 4018728560 in words is "four billion, eighteen million, seven hundred twenty-eight thousand, five hundred sixty".