2118539344 has 20 divisors (see below), whose sum is σ = 4109647060. Its totient is φ = 1057985280.

The previous prime is 2118539341. The next prime is 2118539363. The reversal of 2118539344 is 4439358112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1070074944 + 1048464400 = 32712^2 + 32380^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2118539297 and 2118539306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118539341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66597 + ... + 93124.

It is an arithmetic number, because the mean of its divisors is an integer number (205482353).

Almost surely, 2^2118539344 is an apocalyptic number.

It is an amenable number.

2118539344 is a deficient number, since it is larger than the sum of its proper divisors (1991107716).

2118539344 is a wasteful number, since it uses less digits than its factorization.

2118539344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160558 (or 160552 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 2118539344 is about 46027.5932892434. The cubic root of 2118539344 is about 1284.3365577055.

The spelling of 2118539344 in words is "two billion, one hundred eighteen million, five hundred thirty-nine thousand, three hundred forty-four".