2138241049 has 4 divisors (see below), whose sum is σ = 2443704064. Its totient is φ = 1832778036.

The previous prime is 2138240987. The next prime is 2138241071. The reversal of 2138241049 is 9401428312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2138241049 - 2⁹ = 2138240537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138241449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152731497 + ... + 152731510.

It is an arithmetic number, because the mean of its divisors is an integer number (610926016).

Almost surely, 2^2138241049 is an apocalyptic number.

It is an amenable number.

2138241049 is a deficient number, since it is larger than the sum of its proper divisors (305463015).

2138241049 is an equidigital number, since it uses as much as digits as its factorization.

2138241049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305463014.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 2138241049 is about 46241.1185958990. The cubic root of 2138241049 is about 1288.3055791629.

The spelling of 2138241049 in words is "two billion, one hundred thirty-eight million, two hundred forty-one thousand, forty-nine".