1098973289 has 2 divisors, whose sum is σ = 1098973290. Its totient is φ = 1098973288.

The previous prime is 1098973283. The next prime is 1098973301. The reversal of 1098973289 is 9823798901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641355625 + 457617664 = 25325^2 + 21392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098973289 - 2⁴ = 1098973273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1098973283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549486644 + 549486645.

It is an arithmetic number, because the mean of its divisors is an integer number (549486645).

Almost surely, 2^1098973289 is an apocalyptic number.

It is an amenable number.

1098973289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098973289 is an equidigital number, since it uses as much as digits as its factorization.

1098973289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The square root of 1098973289 is about 33150.7660394145. The cubic root of 1098973289 is about 1031.9588477997.

The spelling of 1098973289 in words is "one billion, ninety-eight million, nine hundred seventy-three thousand, two hundred eighty-nine".