1098273647 has 2 divisors, whose sum is σ = 1098273648. Its totient is φ = 1098273646.

The previous prime is 1098273619. The next prime is 1098273677. The reversal of 1098273647 is 7463728901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098273647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098273677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549136823 + 549136824.

It is an arithmetic number, because the mean of its divisors is an integer number (549136824).

Almost surely, 2^1098273647 is an apocalyptic number.

1098273647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098273647 is an equidigital number, since it uses as much as digits as its factorization.

1098273647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 1098273647 is about 33140.2119335408. The cubic root of 1098273647 is about 1031.7398084987.

The spelling of 1098273647 in words is "one billion, ninety-eight million, two hundred seventy-three thousand, six hundred forty-seven".