1866588341 has 2 divisors, whose sum is σ = 1866588342. Its totient is φ = 1866588340.

The previous prime is 1866588307. The next prime is 1866588401. The reversal of 1866588341 is 1438856681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1759383025 + 107205316 = 41945^2 + 10354^2 .

It is a cyclic number.

It is not a de Polignac number, because 1866588341 - 2¹⁴ = 1866571957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1866588341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1866588301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 933294170 + 933294171.

It is an arithmetic number, because the mean of its divisors is an integer number (933294171).

Almost surely, 2^1866588341 is an apocalyptic number.

It is an amenable number.

1866588341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1866588341 is an equidigital number, since it uses as much as digits as its factorization.

1866588341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 50.

The square root of 1866588341 is about 43204.0315364203. The cubic root of 1866588341 is about 1231.2592785304.

The spelling of 1866588341 in words is "one billion, eight hundred sixty-six million, five hundred eighty-eight thousand, three hundred forty-one".