2158443875 has 24 divisors (see below), whose sum is σ = 3133540800. Its totient is φ = 1480071600.

The previous prime is 2158443869. The next prime is 2158443883. The reversal of 2158443875 is 5783448512.

It is not a de Polignac number, because 2158443875 - 2¹⁸ = 2158181731 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170075 + ... + 182324.

It is an arithmetic number, because the mean of its divisors is an integer number (130564200).

Almost surely, 2^2158443875 is an apocalyptic number.

2158443875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2158443875 is a deficient number, since it is larger than the sum of its proper divisors (975096925).

2158443875 is an equidigital number, since it uses as much as digits as its factorization.

2158443875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352428 (or 352411 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 2158443875 is about 46459.0558987158. The cubic root of 2158443875 is about 1292.3503163247.

The spelling of 2158443875 in words is "two billion, one hundred fifty-eight million, four hundred forty-three thousand, eight hundred seventy-five".