1098856201 has 3 divisors (see below), whose sum is σ = 1098889351. Its totient is φ = 1098823052.

The previous prime is 1098856189. The next prime is 1098856207. The reversal of 1098856201 is 1026588901.

The square root of 1098856201 is 33149.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1095543801 + 3312400 = 33099^2 + 1820^2 .

It is not a de Polignac number, because 1098856201 - 2⁵ = 1098856169 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098856207) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16575 + ... + 49723.

Almost surely, 2^1098856201 is an apocalyptic number.

1098856201 is the 33149-th square number.

1098856201 is the 16575-th centered octagonal number.

It is an amenable number.

1098856201 is a deficient number, since it is larger than the sum of its proper divisors (33150).

1098856201 is an frugal number, since it uses more digits than its factorization.

1098856201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66298 (or 33149 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The cubic root of 1098856201 is about 1031.9221971397.

The spelling of 1098856201 in words is "one billion, ninety-eight million, eight hundred fifty-six thousand, two hundred one".