8218143950 has 12 divisors (see below), whose sum is σ = 15285747840. Its totient is φ = 3287257560.

The previous prime is 8218143919. The next prime is 8218143953. The reversal of 8218143950 is 593418128.

It is a junction number, because it is equal to n+sod(n) for n = 8218143898 and 8218143907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218143953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82181390 + ... + 82181489.

It is an arithmetic number, because the mean of its divisors is an integer number (1273812320).

Almost surely, 2^8218143950 is an apocalyptic number.

8218143950 is a deficient number, since it is larger than the sum of its proper divisors (7067603890).

8218143950 is a wasteful number, since it uses less digits than its factorization.

8218143950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164362891 (or 164362886 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 8218143950 is about 90653.9792287134. The cubic root of 8218143950 is about 2018.0158890821.

The spelling of 8218143950 in words is "eight billion, two hundred eighteen million, one hundred forty-three thousand, nine hundred fifty".