2167061657 has 2 divisors, whose sum is σ = 2167061658. Its totient is φ = 2167061656.

The previous prime is 2167061653. The next prime is 2167061711. The reversal of 2167061657 is 7561607612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2141468176 + 25593481 = 46276^2 + 5059^2 .

It is a cyclic number.

It is not a de Polignac number, because 2167061657 - 2² = 2167061653 is a prime.

It is not a weakly prime, because it can be changed into another prime (2167061653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083530828 + 1083530829.

It is an arithmetic number, because the mean of its divisors is an integer number (1083530829).

Almost surely, 2^2167061657 is an apocalyptic number.

It is an amenable number.

2167061657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167061657 is an equidigital number, since it uses as much as digits as its factorization.

2167061657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 2167061657 is about 46551.7094960003. The cubic root of 2167061657 is about 1294.0679741443.

The spelling of 2167061657 in words is "two billion, one hundred sixty-seven million, sixty-one thousand, six hundred fifty-seven".