789649476658 has 48 divisors (see below), whose sum is σ = 1390431305304. Its totient is φ = 335334612480.

The previous prime is 789649476647. The next prime is 789649476677. The reversal of 789649476658 is 856674946987.

It can be written as a sum of positive squares in 4 ways, for example, as 92502964449 + 697146512209 = 304143^2 + 834953^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54000588 + ... + 54015208.

Almost surely, 2^789649476658 is an apocalyptic number.

789649476658 is a deficient number, since it is larger than the sum of its proper divisors (600781828646).

789649476658 is a wasteful number, since it uses less digits than its factorization.

789649476658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627 (or 19620 counting only the distinct ones).

The product of its digits is 4389396480, while the sum is 79.

The spelling of 789649476658 in words is "seven hundred eighty-nine billion, six hundred forty-nine million, four hundred seventy-six thousand, six hundred fifty-eight".