2118565137 has 8 divisors (see below), whose sum is σ = 3042042304. Its totient is φ = 1303732368.

The previous prime is 2118565117. The next prime is 2118565139. The reversal of 2118565137 is 7315658112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2118565137 - 2⁶ = 2118565073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 54322183 = 2118565137 / (2 + 1 + 1 + 8 + 5 + 6 + 5 + 1 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2118565095 and 2118565104.

It is not an unprimeable number, because it can be changed into a prime (2118565139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27161053 + ... + 27161130.

It is an arithmetic number, because the mean of its divisors is an integer number (380255288).

Almost surely, 2^2118565137 is an apocalyptic number.

It is an amenable number.

2118565137 is a deficient number, since it is larger than the sum of its proper divisors (923477167).

2118565137 is a wasteful number, since it uses less digits than its factorization.

2118565137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54322199.

The product of its digits is 50400, while the sum is 39.

The square root of 2118565137 is about 46027.8734790127. The cubic root of 2118565137 is about 1284.3417699065.

The spelling of 2118565137 in words is "two billion, one hundred eighteen million, five hundred sixty-five thousand, one hundred thirty-seven".