2138127109 has 8 divisors (see below), whose sum is σ = 2214689760. Its totient is φ = 2061753456.

The previous prime is 2138127097. The next prime is 2138127119. The reversal of 2138127109 is 9017218312.

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

It is a cyclic number.

It is not a de Polignac number, because 2138127109 - 2¹¹ = 2138125061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138127119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24019 + ... + 69664.

It is an arithmetic number, because the mean of its divisors is an integer number (276836220).

Almost surely, 2^2138127109 is an apocalyptic number.

2138127109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2138127109 is a deficient number, since it is larger than the sum of its proper divisors (76562651).

2138127109 is an equidigital number, since it uses as much as digits as its factorization.

2138127109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94499.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 2138127109 is about 46239.8865591169. The cubic root of 2138127109 is about 1288.2826955338.

The spelling of 2138127109 in words is "two billion, one hundred thirty-eight million, one hundred twenty-seven thousand, one hundred nine".