2864581109 has 4 divisors (see below), whose sum is σ = 3084933516. Its totient is φ = 2644228704.

The previous prime is 2864581091. The next prime is 2864581129. The reversal of 2864581109 is 9011854682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 789778609 + 2074802500 = 28103^2 + 45550^2 .

It is not a de Polignac number, because 2864581109 - 2¹⁶ = 2864515573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2864581109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864581129) 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, 110176184 + ... + 110176209.

It is an arithmetic number, because the mean of its divisors is an integer number (771233379).

Almost surely, 2^2864581109 is an apocalyptic number.

It is an amenable number.

2864581109 is a deficient number, since it is larger than the sum of its proper divisors (220352407).

2864581109 is a wasteful number, since it uses less digits than its factorization.

2864581109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220352406.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 2864581109 is about 53521.7816314069. The cubic root of 2864581109 is about 1420.2137331193.

The spelling of 2864581109 in words is "two billion, eight hundred sixty-four million, five hundred eighty-one thousand, one hundred nine".