2138946323 has 4 divisors (see below), whose sum is σ = 2150763888. Its totient is φ = 2127128760.

The previous prime is 2138946311. The next prime is 2138946331. The reversal of 2138946323 is 3236498312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2138946323 - 2⁶ = 2138946259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138946373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5908511 + ... + 5908872.

It is an arithmetic number, because the mean of its divisors is an integer number (537690972).

Almost surely, 2^2138946323 is an apocalyptic number.

2138946323 is a deficient number, since it is larger than the sum of its proper divisors (11817565).

2138946323 is a wasteful number, since it uses less digits than its factorization.

2138946323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11817564.

The product of its digits is 186624, while the sum is 41.

The square root of 2138946323 is about 46248.7440153784. The cubic root of 2138946323 is about 1288.4472078082.

The spelling of 2138946323 in words is "two billion, one hundred thirty-eight million, nine hundred forty-six thousand, three hundred twenty-three".