8343500861 has 16 divisors (see below), whose sum is σ = 8972183808. Its totient is φ = 7739318400.

The previous prime is 8343500857. The next prime is 8343500903. The reversal of 8343500861 is 1680053438.

It is a cyclic number.

It is not a de Polignac number, because 8343500861 - 2² = 8343500857 is a prime.

It is a super-2 number, since 2×8343500861² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8343500161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130991 + ... + 183971.

It is an arithmetic number, because the mean of its divisors is an integer number (560761488).

Almost surely, 2^8343500861 is an apocalyptic number.

It is an amenable number.

8343500861 is a deficient number, since it is larger than the sum of its proper divisors (628682947).

8343500861 is a wasteful number, since it uses less digits than its factorization.

8343500861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53212.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 8343500861 is about 91342.7657836131. The cubic root of 8343500861 is about 2028.2248761686.

The spelling of 8343500861 in words is "eight billion, three hundred forty-three million, five hundred thousand, eight hundred sixty-one".