998634751192 has 144 divisors (see below), whose sum is σ = 2099944764000. Its totient is φ = 445003303680.

The previous prime is 998634751189. The next prime is 998634751211. The reversal of 998634751192 is 291157436899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 934176034 + ... + 934177102.

It is an arithmetic number, because the mean of its divisors is an integer number (14582949750).

Almost surely, 2^998634751192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998634751192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049972382000).

998634751192 is an abundant number, since it is smaller than the sum of its proper divisors (1101310012808).

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

998634751192 is a wasteful number, since it uses less digits than its factorization.

998634751192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1834 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 64.

The spelling of 998634751192 in words is "nine hundred ninety-eight billion, six hundred thirty-four million, seven hundred fifty-one thousand, one hundred ninety-two".