2140166641 has 2 divisors, whose sum is σ = 2140166642. Its totient is φ = 2140166640.

The previous prime is 2140166627. The next prime is 2140166681. The reversal of 2140166641 is 1466610412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220803600 + 919363041 = 34940^2 + 30321^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140166641 - 2⁷ = 2140166513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2140166681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070083320 + 1070083321.

It is an arithmetic number, because the mean of its divisors is an integer number (1070083321).

Almost surely, 2^2140166641 is an apocalyptic number.

It is an amenable number.

2140166641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140166641 is an equidigital number, since it uses as much as digits as its factorization.

2140166641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2140166641 is about 46261.9351194911. The cubic root of 2140166641 is about 1288.6921907988.

The spelling of 2140166641 in words is "two billion, one hundred forty million, one hundred sixty-six thousand, six hundred forty-one".