2138505323 has 2 divisors, whose sum is σ = 2138505324. Its totient is φ = 2138505322.

The previous prime is 2138505301. The next prime is 2138505367. The reversal of 2138505323 is 3235058312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2138505323 - 2¹⁰ = 2138504299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2138505323.

It is not a weakly prime, because it can be changed into another prime (2138505373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069252661 + 1069252662.

It is an arithmetic number, because the mean of its divisors is an integer number (1069252662).

Almost surely, 2^2138505323 is an apocalyptic number.

2138505323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138505323 is an equidigital number, since it uses as much as digits as its factorization.

2138505323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2138505323 is about 46243.9760725654. The cubic root of 2138505323 is about 1288.3586526370.

The spelling of 2138505323 in words is "two billion, one hundred thirty-eight million, five hundred five thousand, three hundred twenty-three".