2167538657 has 2 divisors, whose sum is σ = 2167538658. Its totient is φ = 2167538656.

The previous prime is 2167538627. The next prime is 2167538683. The reversal of 2167538657 is 7568357612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2101213921 + 66324736 = 45839^2 + 8144^2 .

It is a cyclic number.

It is not a de Polignac number, because 2167538657 - 2²² = 2163344353 is a prime.

It is not a weakly prime, because it can be changed into another prime (2167538627) 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, 1083769328 + 1083769329.

It is an arithmetic number, because the mean of its divisors is an integer number (1083769329).

Almost surely, 2^2167538657 is an apocalyptic number.

It is an amenable number.

2167538657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167538657 is an equidigital number, since it uses as much as digits as its factorization.

2167538657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 50.

The square root of 2167538657 is about 46556.8325490470. The cubic root of 2167538657 is about 1294.1629145501.

The spelling of 2167538657 in words is "two billion, one hundred sixty-seven million, five hundred thirty-eight thousand, six hundred fifty-seven".