2139354843 has 8 divisors (see below), whose sum is σ = 2874248256. Its totient is φ = 1415349000.

The previous prime is 2139354803. The next prime is 2139354871. The reversal of 2139354843 is 3484539312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2139354843 - 2⁸ = 2139354587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2139354795 and 2139354804.

It is not an unprimeable number, because it can be changed into a prime (2139354803) 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, 2721433 + ... + 2722218.

It is an arithmetic number, because the mean of its divisors is an integer number (359281032).

Almost surely, 2^2139354843 is an apocalyptic number.

2139354843 is a deficient number, since it is larger than the sum of its proper divisors (734893413).

2139354843 is a wasteful number, since it uses less digits than its factorization.

2139354843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443785.

The product of its digits is 311040, while the sum is 42.

The square root of 2139354843 is about 46253.1603568880. The cubic root of 2139354843 is about 1288.5292299611.

The spelling of 2139354843 in words is "two billion, one hundred thirty-nine million, three hundred fifty-four thousand, eight hundred forty-three".