2158448279 has 16 divisors (see below), whose sum is σ = 2531205600. Its totient is φ = 1822455936.

The previous prime is 2158448273. The next prime is 2158448287. The reversal of 2158448279 is 9728448512.

It is a cyclic number.

It is not a de Polignac number, because 2158448279 - 2⁸ = 2158448023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158448273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143504 + ... + 157829.

It is an arithmetic number, because the mean of its divisors is an integer number (158200350).

Almost surely, 2^2158448279 is an apocalyptic number.

2158448279 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2158448279 is a deficient number, since it is larger than the sum of its proper divisors (372757321).

2158448279 is a wasteful number, since it uses less digits than its factorization.

2158448279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301394.

The product of its digits is 1290240, while the sum is 50.

The square root of 2158448279 is about 46459.1032952639. The cubic root of 2158448279 is about 1292.3511952769.

The spelling of 2158448279 in words is "two billion, one hundred fifty-eight million, four hundred forty-eight thousand, two hundred seventy-nine".