998084181 has 32 divisors (see below), whose sum is σ = 1381484160. Its totient is φ = 640640000.

The previous prime is 998084173. The next prime is 998084189. The reversal of 998084181 is 181480899.

998084181 is a nontrivial binomial coefficient, being equal to C(44679, 2).

It is an interprime number because it is at equal distance from previous prime (998084173) and next prime (998084189).

It is a cyclic number.

It is not a de Polignac number, because 998084181 - 2³ = 998084173 is a prime.

It is a super-2 number, since 2×998084181² = 1992344064724881522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 998084181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998084189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3551761 + ... + 3552041.

It is an arithmetic number, because the mean of its divisors is an integer number (43171380).

Almost surely, 2^998084181 is an apocalyptic number.

998084181 is the 44678-th triangular number.

It is an amenable number.

998084181 is a deficient number, since it is larger than the sum of its proper divisors (383399979).

998084181 is a wasteful number, since it uses less digits than its factorization.

998084181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its (nonzero) digits is 165888, while the sum is 48.

The square root of 998084181 is about 31592.4703212648. The cubic root of 998084181 is about 999.3609854140.

The spelling of 998084181 in words is "nine hundred ninety-eight million, eighty-four thousand, one hundred eighty-one".