298638435640 has 16 divisors (see below), whose sum is σ = 671936480280. Its totient is φ = 119455374240.

The previous prime is 298638435569. The next prime is 298638435679. The reversal of 298638435640 is 46534836892.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3732980406 + ... + 3732980485.

Almost surely, 2^298638435640 is an apocalyptic number.

298638435640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298638435640 is an abundant number, since it is smaller than the sum of its proper divisors (373298044640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

298638435640 is a wasteful number, since it uses less digits than its factorization.

298638435640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465960902 (or 7465960898 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 298638435640 in words is "two hundred ninety-eight billion, six hundred thirty-eight million, four hundred thirty-five thousand, six hundred forty".