2118705504 has 144 divisors (see below), whose sum is σ = 6009272640. Its totient is φ = 651801600.

The previous prime is 2118705487. The next prime is 2118705521. The reversal of 2118705504 is 4055078112.

It is an interprime number because it is at equal distance from previous prime (2118705487) and next prime (2118705521).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3065799 + ... + 3066489.

It is an arithmetic number, because the mean of its divisors is an integer number (41731060).

Almost surely, 2^2118705504 is an apocalyptic number.

2118705504 is a gapful number since it is divisible by the number (24) 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 2118705504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3004636320).

2118705504 is an abundant number, since it is smaller than the sum of its proper divisors (3890567136).

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

2118705504 is a wasteful number, since it uses less digits than its factorization.

2118705504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 2118705504 is about 46029.3982580698. The cubic root of 2118705504 is about 1284.3701342645.

The spelling of 2118705504 in words is "two billion, one hundred eighteen million, seven hundred five thousand, five hundred four".