2138359361 has 4 divisors (see below), whose sum is σ = 2174602800. Its totient is φ = 2102115924.

The previous prime is 2138359319. The next prime is 2138359397. The reversal of 2138359361 is 1639538312.

It is a happy number.

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 2138359361 - 2¹⁰ = 2138358337 is a prime.

It is a super-3 number, since 3×2138359361³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138359661) 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 3 ways as a sum of consecutive naturals, for example, 18121631 + ... + 18121748.

It is an arithmetic number, because the mean of its divisors is an integer number (543650700).

Almost surely, 2^2138359361 is an apocalyptic number.

It is an amenable number.

2138359361 is a deficient number, since it is larger than the sum of its proper divisors (36243439).

2138359361 is an equidigital number, since it uses as much as digits as its factorization.

2138359361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36243438.

The product of its digits is 116640, while the sum is 41.

The square root of 2138359361 is about 46242.3978725152. The cubic root of 2138359361 is about 1288.3293400011.

The spelling of 2138359361 in words is "two billion, one hundred thirty-eight million, three hundred fifty-nine thousand, three hundred sixty-one".