298172538881 has 16 divisors (see below), whose sum is σ = 345840337920. Its totient is φ = 251800745040.

The previous prime is 298172538877. The next prime is 298172538883. The reversal of 298172538881 is 188835271892.

It is a cyclic number.

It is not a de Polignac number, because 298172538881 - 2² = 298172538877 is a prime.

It is a super-2 number, since 2×298172538881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (298172538883) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1042181 + ... + 1297106.

It is an arithmetic number, because the mean of its divisors is an integer number (21615021120).

Almost surely, 2^298172538881 is an apocalyptic number.

It is an amenable number.

298172538881 is a deficient number, since it is larger than the sum of its proper divisors (47667799039).

298172538881 is a wasteful number, since it uses less digits than its factorization.

298172538881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339564.

The product of its digits is 15482880, while the sum is 62.

The spelling of 298172538881 in words is "two hundred ninety-eight billion, one hundred seventy-two million, five hundred thirty-eight thousand, eight hundred eighty-one".