2189262857 has 2 divisors, whose sum is σ = 2189262858. Its totient is φ = 2189262856.

The previous prime is 2189262841. The next prime is 2189262947. The reversal of 2189262857 is 7582629812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2028961936 + 160300921 = 45044^2 + 12661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189262857 - 2⁴ = 2189262841 is a prime.

It is not a weakly prime, because it can be changed into another prime (2189262157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094631428 + 1094631429.

It is an arithmetic number, because the mean of its divisors is an integer number (1094631429).

Almost surely, 2^2189262857 is an apocalyptic number.

It is an amenable number.

2189262857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189262857 is an equidigital number, since it uses as much as digits as its factorization.

2189262857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 50.

The square root of 2189262857 is about 46789.5592734106. The cubic root of 2189262857 is about 1298.4721413399.

The spelling of 2189262857 in words is "two billion, one hundred eighty-nine million, two hundred sixty-two thousand, eight hundred fifty-seven".