998193452488 has 32 divisors (see below), whose sum is σ = 1934228804760. Its totient is φ = 482614558720.

The previous prime is 998193452483. The next prime is 998193452489. The reversal of 998193452488 is 884254391899.

It can be written as a sum of positive squares in 4 ways, for example, as 43738703044 + 954454749444 = 209138^2 + 976962^2 .

It is a super-2 number, since 2×998193452488² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998193452483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13428745 + ... + 13502872.

Almost surely, 2^998193452488 is an apocalyptic number.

It is an amenable number.

998193452488 is a deficient number, since it is larger than the sum of its proper divisors (936035352272).

998193452488 is a wasteful number, since it uses less digits than its factorization.

998193452488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26931777 (or 26931773 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 70.

The spelling of 998193452488 in words is "nine hundred ninety-eight billion, one hundred ninety-three million, four hundred fifty-two thousand, four hundred eighty-eight".