4123640866 has 8 divisors (see below), whose sum is σ = 6185774700. Its totient is φ = 2061715968.

The previous prime is 4123640837. The next prime is 4123640867. The reversal of 4123640866 is 6680463214.

It can be written as a sum of positive squares in 2 ways, for example, as 3687039841 + 436601025 = 60721^2 + 20895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4123640867) 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, 13810 + ... + 91858.

Almost surely, 2^4123640866 is an apocalyptic number.

4123640866 is a deficient number, since it is larger than the sum of its proper divisors (2062133834).

4123640866 is a wasteful number, since it uses less digits than its factorization.

4123640866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104468.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 4123640866 is about 64215.5811777796. The cubic root of 4123640866 is about 1603.5910054889.

The spelling of 4123640866 in words is "four billion, one hundred twenty-three million, six hundred forty thousand, eight hundred sixty-six".