2138414999 has 8 divisors (see below), whose sum is σ = 2522738688. Its totient is φ = 1773800280.

The previous prime is 2138414987. The next prime is 2138415067. The reversal of 2138414999 is 9994148312.

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

It is not a de Polignac number, because 2138414999 - 2⁸ = 2138414743 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 (2138414699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4927007 + ... + 4927440.

It is an arithmetic number, because the mean of its divisors is an integer number (315342336).

Almost surely, 2^2138414999 is an apocalyptic number.

2138414999 is a deficient number, since it is larger than the sum of its proper divisors (384323689).

2138414999 is an equidigital number, since it uses as much as digits as its factorization.

2138414999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9854485.

The product of its digits is 559872, while the sum is 50.

The square root of 2138414999 is about 46242.9994593776. Note that the first 3 decimals coincide. The cubic root of 2138414999 is about 1288.3405135901.

Adding to 2138414999 its sum of digits (50), we get a square (2138415049 = 46243²).

The spelling of 2138414999 in words is "two billion, one hundred thirty-eight million, four hundred fourteen thousand, nine hundred ninety-nine".