8646438458 has 16 divisors (see below), whose sum is σ = 14883975744. Its totient is φ = 3690239040.

The previous prime is 8646438443. The next prime is 8646438469. The reversal of 8646438458 is 8548346468.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277960 + ... + 1284707.

It is an arithmetic number, because the mean of its divisors is an integer number (930248484).

Almost surely, 2^8646438458 is an apocalyptic number.

8646438458 is a deficient number, since it is larger than the sum of its proper divisors (6237537286).

8646438458 is a wasteful number, since it uses less digits than its factorization.

8646438458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562917.

The product of its digits is 17694720, while the sum is 56.

The square root of 8646438458 is about 92986.2272489856. The cubic root of 8646438458 is about 2052.4807135439.

The spelling of 8646438458 in words is "eight billion, six hundred forty-six million, four hundred thirty-eight thousand, four hundred fifty-eight".