4205263861 has 4 divisors (see below), whose sum is σ = 4209416172. Its totient is φ = 4201111552.

The previous prime is 4205263859. The next prime is 4205263879. The reversal of 4205263861 is 1683625024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1362348100 + 2842915761 = 36910^2 + 53319^2 .

It is a cyclic number.

It is not a de Polignac number, because 4205263861 - 2¹ = 4205263859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4205263861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4205263831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074636 + ... + 2076661.

It is an arithmetic number, because the mean of its divisors is an integer number (1052354043).

Almost surely, 2^4205263861 is an apocalyptic number.

It is an amenable number.

4205263861 is a deficient number, since it is larger than the sum of its proper divisors (4152311).

4205263861 is a wasteful number, since it uses less digits than its factorization.

4205263861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152310.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 4205263861 is about 64848.0058367256. The cubic root of 4205263861 is about 1614.1024014657.

Adding to 4205263861 its reverse (1683625024), we get a palindrome (5888888885).

The spelling of 4205263861 in words is "four billion, two hundred five million, two hundred sixty-three thousand, eight hundred sixty-one".