4205093861 has 2 divisors, whose sum is σ = 4205093862. Its totient is φ = 4205093860.

The previous prime is 4205093833. The next prime is 4205093863. The reversal of 4205093861 is 1683905024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2923024225 + 1282069636 = 54065^2 + 35806^2 .

It is a cyclic number.

It is not a de Polignac number, because 4205093861 - 2²² = 4200899557 is a prime.

Together with 4205093863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4205093863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2102546930 + 2102546931.

It is an arithmetic number, because the mean of its divisors is an integer number (2102546931).

Almost surely, 2^4205093861 is an apocalyptic number.

It is an amenable number.

4205093861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4205093861 is an equidigital number, since it uses as much as digits as its factorization.

4205093861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 4205093861 is about 64846.6950661327. The cubic root of 4205093861 is about 1614.0806508602.

Adding to 4205093861 its reverse (1683905024), we get a palindrome (5888998885).

The spelling of 4205093861 in words is "four billion, two hundred five million, ninety-three thousand, eight hundred sixty-one".