1098134251 has 2 divisors, whose sum is σ = 1098134252. Its totient is φ = 1098134250.

The previous prime is 1098134249. The next prime is 1098134263. The reversal of 1098134251 is 1524318901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1098134251 - 2¹ = 1098134249 is a prime.

Together with 1098134249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1098134651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549067125 + 549067126.

It is an arithmetic number, because the mean of its divisors is an integer number (549067126).

Almost surely, 2^1098134251 is an apocalyptic number.

1098134251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098134251 is an equidigital number, since it uses as much as digits as its factorization.

1098134251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1098134251 is about 33138.1087420510. The cubic root of 1098134251 is about 1031.6961562062.

The spelling of 1098134251 in words is "one billion, ninety-eight million, one hundred thirty-four thousand, two hundred fifty-one".