2138818367 has 8 divisors (see below), whose sum is σ = 2446766112. Its totient is φ = 1831471200.

The previous prime is 2138818349. The next prime is 2138818387. The reversal of 2138818367 is 7638188312.

It is a happy number.

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 2138818367 - 2¹⁸ = 2138556223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138818327) 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, 142484 + ... + 156777.

It is an arithmetic number, because the mean of its divisors is an integer number (305845764).

Almost surely, 2^2138818367 is an apocalyptic number.

2138818367 is a deficient number, since it is larger than the sum of its proper divisors (307947745).

2138818367 is a wasteful number, since it uses less digits than its factorization.

2138818367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300289.

The product of its digits is 387072, while the sum is 47.

The square root of 2138818367 is about 46247.3606490143. The cubic root of 2138818367 is about 1288.4215148090.

The spelling of 2138818367 in words is "two billion, one hundred thirty-eight million, eight hundred eighteen thousand, three hundred sixty-seven".