2135198579 has 4 divisors (see below), whose sum is σ = 2180628384. Its totient is φ = 2089768776.

The previous prime is 2135198561. The next prime is 2135198591. The reversal of 2135198579 is 9758915312.

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 2135198579 - 2²⁸ = 1866763123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135198539) 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, 22714832 + ... + 22714925.

It is an arithmetic number, because the mean of its divisors is an integer number (545157096).

Almost surely, 2^2135198579 is an apocalyptic number.

2135198579 is a deficient number, since it is larger than the sum of its proper divisors (45429805).

2135198579 is an equidigital number, since it uses as much as digits as its factorization.

2135198579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45429804.

The product of its digits is 680400, while the sum is 50.

The square root of 2135198579 is about 46208.2090001333. The cubic root of 2135198579 is about 1287.6942524513.

The spelling of 2135198579 in words is "two billion, one hundred thirty-five million, one hundred ninety-eight thousand, five hundred seventy-nine".