998134519 has 4 divisors (see below), whose sum is σ = 1041531696. Its totient is φ = 954737344.

The previous prime is 998134513. The next prime is 998134541. The reversal of 998134519 is 915431899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 998134519 - 2²⁷ = 863916791 is a prime.

It is a super-2 number, since 2×998134519² = 1992545036038722722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998134513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21698554 + ... + 21698599.

It is an arithmetic number, because the mean of its divisors is an integer number (260382924).

Almost surely, 2^998134519 is an apocalyptic number.

998134519 is a deficient number, since it is larger than the sum of its proper divisors (43397177).

998134519 is a wasteful number, since it uses less digits than its factorization.

998134519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43397176.

The product of its digits is 349920, while the sum is 49.

The square root of 998134519 is about 31593.2669883949. The cubic root of 998134519 is about 999.3777859299.

The spelling of 998134519 in words is "nine hundred ninety-eight million, one hundred thirty-four thousand, five hundred nineteen".