4395681861 has 4 divisors (see below), whose sum is σ = 5860909152. Its totient is φ = 2930454572.

The previous prime is 4395681841. The next prime is 4395681877. The reversal of 4395681861 is 1681865934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4395681861 - 2¹³ = 4395673669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4395681821) 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, 732613641 + ... + 732613646.

It is an arithmetic number, because the mean of its divisors is an integer number (1465227288).

Almost surely, 2^4395681861 is an apocalyptic number.

It is an amenable number.

4395681861 is a deficient number, since it is larger than the sum of its proper divisors (1465227291).

4395681861 is a wasteful number, since it uses less digits than its factorization.

4395681861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465227290.

The product of its digits is 1244160, while the sum is 51.

The square root of 4395681861 is about 66299.9386198811. The cubic root of 4395681861 is about 1638.1063137563.

The spelling of 4395681861 in words is "four billion, three hundred ninety-five million, six hundred eighty-one thousand, eight hundred sixty-one".