8643420419 has 8 divisors (see below), whose sum is σ = 8745803808. Its totient is φ = 8541308160.

The previous prime is 8643420413. The next prime is 8643420427. The reversal of 8643420419 is 9140243468.

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

It is a cyclic number.

It is not a de Polignac number, because 8643420419 - 2¹² = 8643416323 is a prime.

It is a super-2 number, since 2×8643420419² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8643420413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3287 + ... + 131520.

It is an arithmetic number, because the mean of its divisors is an integer number (1093225476).

Almost surely, 2^8643420419 is an apocalyptic number.

8643420419 is a deficient number, since it is larger than the sum of its proper divisors (102383389).

8643420419 is a wasteful number, since it uses less digits than its factorization.

8643420419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135565.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 8643420419 is about 92969.9974131440. The cubic root of 8643420419 is about 2052.2418796496.

The spelling of 8643420419 in words is "eight billion, six hundred forty-three million, four hundred twenty thousand, four hundred nineteen".