2864319869 has 2 divisors, whose sum is σ = 2864319870. Its totient is φ = 2864319868.

The previous prime is 2864319839. The next prime is 2864319923. The reversal of 2864319869 is 9689134682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2481334969 + 382984900 = 49813^2 + 19570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2864319869 - 2²⁰ = 2863271293 is a prime.

It is a super-2 number, since 2×2864319869² = 16408656623896354322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2864319839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432159934 + 1432159935.

It is an arithmetic number, because the mean of its divisors is an integer number (1432159935).

Almost surely, 2^2864319869 is an apocalyptic number.

It is an amenable number.

2864319869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2864319869 is an equidigital number, since it uses as much as digits as its factorization.

2864319869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 56.

The square root of 2864319869 is about 53519.3410740454. The cubic root of 2864319869 is about 1420.1705589285.

The spelling of 2864319869 in words is "two billion, eight hundred sixty-four million, three hundred nineteen thousand, eight hundred sixty-nine".