298978538265 has 192 divisors, whose sum is σ = 604697812992. Its totient is φ = 140467219200.

The previous prime is 298978538249. The next prime is 298978538273. The reversal of 298978538265 is 562835879892.

298978538265 is a `hidden beast` number, since 2 + 9 + 89 + 7 + 8 + 538 + 2 + 6 + 5 = 666.

It is not a de Polignac number, because 298978538265 - 2⁴ = 298978538249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 298978538193 and 298978538202.

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 191 ways as a sum of consecutive naturals, for example, 64697655 + ... + 64702275.

It is an arithmetic number, because the mean of its divisors is an integer number (3149467776).

Almost surely, 2^298978538265 is an apocalyptic number.

It is an amenable number.

298978538265 is an abundant number, since it is smaller than the sum of its proper divisors (305719274727).

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

298978538265 is a wasteful number, since it uses less digits than its factorization.

298978538265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802 (or 4790 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 72.

The spelling of 298978538265 in words is "two hundred ninety-eight billion, nine hundred seventy-eight million, five hundred thirty-eight thousand, two hundred sixty-five".