2861282091 has 4 divisors (see below), whose sum is σ = 3815042792. Its totient is φ = 1907521392.

The previous prime is 2861282089. The next prime is 2861282107. The reversal of 2861282091 is 1902821682.

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

It is not a de Polignac number, because 2861282091 - 2¹ = 2861282089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2861282191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476880346 + ... + 476880351.

It is an arithmetic number, because the mean of its divisors is an integer number (953760698).

Almost surely, 2^2861282091 is an apocalyptic number.

2861282091 is a deficient number, since it is larger than the sum of its proper divisors (953760701).

2861282091 is an equidigital number, since it uses as much as digits as its factorization.

2861282091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953760700.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 2861282091 is about 53490.9533566191. The cubic root of 2861282091 is about 1419.6683234803.

The spelling of 2861282091 in words is "two billion, eight hundred sixty-one million, two hundred eighty-two thousand, ninety-one".