2113118280 has 384 divisors, whose sum is σ = 8769196800. Its totient is φ = 445658112.

The previous prime is 2113118251. The next prime is 2113118291. The reversal of 2113118280 is 828113112.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 883326 + ... + 885714.

It is an arithmetic number, because the mean of its divisors is an integer number (22836450).

Almost surely, 2^2113118280 is an apocalyptic number.

2113118280 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 2113118280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4384598400).

2113118280 is an abundant number, since it is smaller than the sum of its proper divisors (6656078520).

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

2113118280 is a wasteful number, since it uses less digits than its factorization.

2113118280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 2113118280 is about 45968.6662847640. Note that the first 3 decimals coincide. The cubic root of 2113118280 is about 1283.2401391068.

The spelling of 2113118280 in words is "two billion, one hundred thirteen million, one hundred eighteen thousand, two hundred eighty".