298218656836 has 9 divisors (see below), whose sum is σ = 521884560799. Its totient is φ = 149108782324.

The previous prime is 298218656821. The next prime is 298218656837. The reversal of 298218656836 is 638656812892.

The square root of 298218656836 is 546094.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298218656837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 955665 + ... + 1228711.

Almost surely, 2^298218656836 is an apocalyptic number.

298218656836 is the 546094-th square number.

It is an amenable number.

298218656836 is a deficient number, since it is larger than the sum of its proper divisors (223665903963).

298218656836 is an frugal number, since it uses more digits than its factorization.

298218656836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546098 (or 273049 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 64.

Multiplying 298218656836 by its sum of digits (64), we get a square (19085994037504 = 4368752²).

The spelling of 298218656836 in words is "two hundred ninety-eight billion, two hundred eighteen million, six hundred fifty-six thousand, eight hundred thirty-six".