2239686851 has 2 divisors, whose sum is σ = 2239686852. Its totient is φ = 2239686850.

The previous prime is 2239686833. The next prime is 2239686859. The reversal of 2239686851 is 1586869322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2239686851 - 2²² = 2235492547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2239686851.

It is not a weakly prime, because it can be changed into another prime (2239686859) 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 as a sum of consecutive naturals, namely, 1119843425 + 1119843426.

It is an arithmetic number, because the mean of its divisors is an integer number (1119843426).

Almost surely, 2^2239686851 is an apocalyptic number.

2239686851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239686851 is an equidigital number, since it uses as much as digits as its factorization.

2239686851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The square root of 2239686851 is about 47325.3299090455. The cubic root of 2239686851 is about 1308.3655491420.

The spelling of 2239686851 in words is "two billion, two hundred thirty-nine million, six hundred eighty-six thousand, eight hundred fifty-one".