998144158 has 16 divisors (see below), whose sum is σ = 1657707264. Its totient is φ = 446929560.

The previous prime is 998144131. The next prime is 998144183. The reversal of 998144158 is 851441899.

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, 337110 + ... + 340057.

It is an arithmetic number, because the mean of its divisors is an integer number (103606704).

Almost surely, 2^998144158 is an apocalyptic number.

998144158 is a deficient number, since it is larger than the sum of its proper divisors (659563106).

998144158 is a wasteful number, since it uses less digits than its factorization.

998144158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677247.

The product of its digits is 414720, while the sum is 49.

The square root of 998144158 is about 31593.4195363528. The cubic root of 998144158 is about 999.3810029217.

The spelling of 998144158 in words is "nine hundred ninety-eight million, one hundred forty-four thousand, one hundred fifty-eight".