1098298189 has 4 divisors (see below), whose sum is σ = 1108017756. Its totient is φ = 1088578624.

The previous prime is 1098298169. The next prime is 1098298193. The reversal of 1098298189 is 9818928901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9818928901 = 17 ⋅577584053.

It can be written as a sum of positive squares in 2 ways, for example, as 31753225 + 1066544964 = 5635^2 + 32658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098298189 - 2²¹ = 1096201037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098298109) 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, 4859614 + ... + 4859839.

It is an arithmetic number, because the mean of its divisors is an integer number (277004439).

Almost surely, 2^1098298189 is an apocalyptic number.

It is an amenable number.

1098298189 is a deficient number, since it is larger than the sum of its proper divisors (9719567).

1098298189 is an equidigital number, since it uses as much as digits as its factorization.

1098298189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719566.

The product of its (nonzero) digits is 746496, while the sum is 55.

The square root of 1098298189 is about 33140.5822067145. The cubic root of 1098298189 is about 1031.7474935202.

The spelling of 1098298189 in words is "one billion, ninety-eight million, two hundred ninety-eight thousand, one hundred eighty-nine".