1098200881 has 2 divisors, whose sum is σ = 1098200882. Its totient is φ = 1098200880.

The previous prime is 1098200879. The next prime is 1098200921. The reversal of 1098200881 is 1880028901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 936910881 + 161290000 = 30609^2 + 12700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098200881 - 2¹ = 1098200879 is a prime.

It is a super-2 number, since 2×1098200881² = 2412090350058352322, which contains 22 as substring.

Together with 1098200879, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1098200881.

It is not a weakly prime, because it can be changed into another prime (1098200801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549100440 + 549100441.

It is an arithmetic number, because the mean of its divisors is an integer number (549100441).

Almost surely, 2^1098200881 is an apocalyptic number.

It is an amenable number.

1098200881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098200881 is an equidigital number, since it uses as much as digits as its factorization.

1098200881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1098200881 is about 33139.1140648026. The cubic root of 1098200881 is about 1031.7170220595.

The spelling of 1098200881 in words is "one billion, ninety-eight million, two hundred thousand, eight hundred eighty-one".