998378931192 has 32 divisors (see below), whose sum is σ = 2501030753280. Its totient is φ = 332115187040.

The previous prime is 998378931181. The next prime is 998378931217. The reversal of 998378931192 is 291139873899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42349848 + ... + 42373415.

It is an arithmetic number, because the mean of its divisors is an integer number (78157211040).

Almost surely, 2^998378931192 is an apocalyptic number.

It is an amenable number.

998378931192 is an abundant number, since it is smaller than the sum of its proper divisors (1502651822088).

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

998378931192 is a wasteful number, since it uses less digits than its factorization.

998378931192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84723763 (or 84723759 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 69.

The spelling of 998378931192 in words is "nine hundred ninety-eight billion, three hundred seventy-eight million, nine hundred thirty-one thousand, one hundred ninety-two".