2018423880 has 512 divisors, whose sum is σ = 7838208000. Its totient is φ = 457205760.

The previous prime is 2018423879. The next prime is 2018423887. The reversal of 2018423880 is 883248102.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (2018423887) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22678876 + ... + 22678964.

It is an arithmetic number, because the mean of its divisors is an integer number (15309000).

Almost surely, 2^2018423880 is an apocalyptic number.

2018423880 is a gapful number since it is divisible by the number (20) 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 2018423880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3919104000).

2018423880 is an abundant number, since it is smaller than the sum of its proper divisors (5819784120).

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

2018423880 is a wasteful number, since it uses less digits than its factorization.

2018423880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 2018423880 is about 44926.8725820082. The cubic root of 2018423880 is about 1263.7780030601.

The spelling of 2018423880 in words is "two billion, eighteen million, four hundred twenty-three thousand, eight hundred eighty".