998309193242 has 32 divisors (see below), whose sum is σ = 1620753235200. Its totient is φ = 459704351808.

The previous prime is 998309193229. The next prime is 998309193263. The reversal of 998309193242 is 242391903899.

It is a super-2 number, since 2×998309193242² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2054258 + ... + 2493309.

It is an arithmetic number, because the mean of its divisors is an integer number (50648538600).

Almost surely, 2^998309193242 is an apocalyptic number.

998309193242 is a deficient number, since it is larger than the sum of its proper divisors (622444041958).

998309193242 is a wasteful number, since it uses less digits than its factorization.

998309193242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547750.

The product of its (nonzero) digits is 7558272, while the sum is 59.

The spelling of 998309193242 in words is "nine hundred ninety-eight billion, three hundred nine million, one hundred ninety-three thousand, two hundred forty-two".