1098917201 has 2 divisors, whose sum is σ = 1098917202. Its totient is φ = 1098917200.

The previous prime is 1098917189. The next prime is 1098917227. The reversal of 1098917201 is 1027198901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551310400 + 547606801 = 23480^2 + 23401^2 .

It is an emirp because it is prime and its reverse (1027198901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1098917201 - 2¹⁸ = 1098655057 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 (1098917101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549458600 + 549458601.

It is an arithmetic number, because the mean of its divisors is an integer number (549458601).

Almost surely, 2^1098917201 is an apocalyptic number.

It is an amenable number.

1098917201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098917201 is an equidigital number, since it uses as much as digits as its factorization.

1098917201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 1098917201 is about 33149.9200753184. The cubic root of 1098917201 is about 1031.9412915669.

The spelling of 1098917201 in words is "one billion, ninety-eight million, nine hundred seventeen thousand, two hundred one".