998637150 has 144 divisors (see below), whose sum is σ = 3033020160. Its totient is φ = 216216000.

The previous prime is 998637139. The next prime is 998637151. The reversal of 998637150 is 51736899.

It is a self number, because there is not a number n which added to its sum of digits gives 998637150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998637151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 136075 + ... + 143225.

It is an arithmetic number, because the mean of its divisors is an integer number (21062640).

Almost surely, 2^998637150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998637150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516510080).

998637150 is an abundant number, since it is smaller than the sum of its proper divisors (2034383010).

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

998637150 is a wasteful number, since it uses less digits than its factorization.

998637150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7199 (or 7187 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 998637150 is about 31601.2207042703. The cubic root of 998637150 is about 999.5455101369.

The spelling of 998637150 in words is "nine hundred ninety-eight million, six hundred thirty-seven thousand, one hundred fifty".