998189119 has 16 divisors (see below), whose sum is σ = 1092648960. Its totient is φ = 907793280.

The previous prime is 998189083. The next prime is 998189131. The reversal of 998189119 is 911981899.

998189119 = T₂₅₇₉₅ + T₂₅₇₉₆ + T₂₅₇₉₇.

It is a cyclic number.

It is not a de Polignac number, because 998189119 - 2⁷ = 998188991 is a prime.

It is a super-2 number, since 2×998189119² = 1992763034579992322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998189119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998189189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546642 + ... + 548464.

It is an arithmetic number, because the mean of its divisors is an integer number (68290560).

Almost surely, 2^998189119 is an apocalyptic number.

998189119 is the 25797-th centered triangular number.

998189119 is a deficient number, since it is larger than the sum of its proper divisors (94459841).

998189119 is a wasteful number, since it uses less digits than its factorization.

998189119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910.

The product of its digits is 419904, while the sum is 55.

The square root of 998189119 is about 31594.1310847442. The cubic root of 998189119 is about 999.3960082674.

The spelling of 998189119 in words is "nine hundred ninety-eight million, one hundred eighty-nine thousand, one hundred nineteen".