2101286879 has 4 divisors (see below), whose sum is σ = 2101472520. Its totient is φ = 2101101240.

The previous prime is 2101286833. The next prime is 2101286903. The reversal of 2101286879 is 9786821012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101286879 is a prime.

It is a super-3 number, since 3×2101286879³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101286179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74657 + ... + 98874.

It is an arithmetic number, because the mean of its divisors is an integer number (525368130).

Almost surely, 2^2101286879 is an apocalyptic number.

2101286879 is a deficient number, since it is larger than the sum of its proper divisors (185641).

2101286879 is a wasteful number, since it uses less digits than its factorization.

2101286879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185640.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 2101286879 is about 45839.7958001560. The cubic root of 2101286879 is about 1280.8406910079.

The spelling of 2101286879 in words is "two billion, one hundred one million, two hundred eighty-six thousand, eight hundred seventy-nine".