2018054640 has 160 divisors (see below), whose sum is σ = 7184825856. Its totient is φ = 459002880.

The previous prime is 2018054627. The next prime is 2018054641. The reversal of 2018054640 is 464508102.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2018054598 and 2018054607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018054641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351634 + ... + 357326.

Almost surely, 2^2018054640 is an apocalyptic number.

2018054640 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 2018054640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3592412928).

2018054640 is an abundant number, since it is smaller than the sum of its proper divisors (5166771216).

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

2018054640 is a wasteful number, since it uses less digits than its factorization.

2018054640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5927 (or 5921 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2018054640 is about 44922.7630494831. The cubic root of 2018054640 is about 1263.7009353618.

The spelling of 2018054640 in words is "two billion, eighteen million, fifty-four thousand, six hundred forty".