2118246540 has 96 divisors (see below), whose sum is σ = 6336664320. Its totient is φ = 527129856.

The previous prime is 2118246527. The next prime is 2118246541. The reversal of 2118246540 is 456428112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2118246541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62514 + ... + 90246.

It is an arithmetic number, because the mean of its divisors is an integer number (66006920).

Almost surely, 2^2118246540 is an apocalyptic number.

2118246540 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 2118246540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3168332160).

2118246540 is an abundant number, since it is smaller than the sum of its proper divisors (4218417780).

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

2118246540 is a wasteful number, since it uses less digits than its factorization.

2118246540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27831 (or 27829 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 2118246540 is about 46024.4124351414. The cubic root of 2118246540 is about 1284.2773854573.

The spelling of 2118246540 in words is "two billion, one hundred eighteen million, two hundred forty-six thousand, five hundred forty".