2158479187 has 8 divisors (see below), whose sum is σ = 2195801280. Its totient is φ = 2121181800.

The previous prime is 2158479163. The next prime is 2158479203. The reversal of 2158479187 is 7819748512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158479187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158479157) 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, 294388 + ... + 301630.

It is an arithmetic number, because the mean of its divisors is an integer number (274475160).

Almost surely, 2^2158479187 is an apocalyptic number.

2158479187 is a deficient number, since it is larger than the sum of its proper divisors (37322093).

2158479187 is an equidigital number, since it uses as much as digits as its factorization.

2158479187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12353.

The product of its digits is 1128960, while the sum is 52.

The square root of 2158479187 is about 46459.4359307127. The cubic root of 2158479187 is about 1292.3573638750.

The spelling of 2158479187 in words is "two billion, one hundred fifty-eight million, four hundred seventy-nine thousand, one hundred eighty-seven".