2117518149 has 8 divisors (see below), whose sum is σ = 2842055872. Its totient is φ = 1402329600.

The previous prime is 2117518111. The next prime is 2117518153. The reversal of 2117518149 is 9418157112.

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

It is not a de Polignac number, because 2117518149 - 2⁸ = 2117517893 is a prime.

It is a super-2 number, since 2×2117518149² = 8967766222688772402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117518199) 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, 2336764 + ... + 2337669.

It is an arithmetic number, because the mean of its divisors is an integer number (355256984).

Almost surely, 2^2117518149 is an apocalyptic number.

It is an amenable number.

2117518149 is a deficient number, since it is larger than the sum of its proper divisors (724537723).

2117518149 is a wasteful number, since it uses less digits than its factorization.

2117518149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674587.

The product of its digits is 20160, while the sum is 39.

The square root of 2117518149 is about 46016.4986608064. The cubic root of 2117518149 is about 1284.1301625356.

The spelling of 2117518149 in words is "two billion, one hundred seventeen million, five hundred eighteen thousand, one hundred forty-nine".