298139277891 has 192 divisors, whose sum is σ = 524129464320. Its totient is φ = 150127810560.

The previous prime is 298139277883. The next prime is 298139277901. The reversal of 298139277891 is 198772931892.

It is not a de Polignac number, because 298139277891 - 2³ = 298139277883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (298139277851) 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 191 ways as a sum of consecutive naturals, for example, 971137560 + ... + 971137866.

It is an arithmetic number, because the mean of its divisors is an integer number (2729840960).

Almost surely, 2^298139277891 is an apocalyptic number.

298139277891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

298139277891 is a deficient number, since it is larger than the sum of its proper divisors (225990186429).

298139277891 is a wasteful number, since it uses less digits than its factorization.

298139277891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 458 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 66.

The spelling of 298139277891 in words is "two hundred ninety-eight billion, one hundred thirty-nine million, two hundred seventy-seven thousand, eight hundred ninety-one".