1098134249 has 2 divisors, whose sum is σ = 1098134250. Its totient is φ = 1098134248.

The previous prime is 1098134183. The next prime is 1098134251. The reversal of 1098134249 is 9424318901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1097265625 + 868624 = 33125^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098134249 - 2²⁰ = 1097085673 is a prime.

Together with 1098134251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1098134299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549067124 + 549067125.

It is an arithmetic number, because the mean of its divisors is an integer number (549067125).

Almost surely, 2^1098134249 is an apocalyptic number.

It is an amenable number.

1098134249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098134249 is an equidigital number, since it uses as much as digits as its factorization.

1098134249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1098134249 is about 33138.1087118743. The cubic root of 1098134249 is about 1031.6961555799.

The spelling of 1098134249 in words is "one billion, ninety-eight million, one hundred thirty-four thousand, two hundred forty-nine".