1098085169 has 4 divisors (see below), whose sum is σ = 1102167540. Its totient is φ = 1094002800.

The previous prime is 1098085141. The next prime is 1098085211. The reversal of 1098085169 is 9615808901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 458602225 + 639482944 = 21415^2 + 25288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098085169 is a prime.

It is a super-2 number, since 2×1098085169² = 2411582076755517122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098085669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040782 + ... + 2041319.

It is an arithmetic number, because the mean of its divisors is an integer number (275541885).

Almost surely, 2^1098085169 is an apocalyptic number.

It is an amenable number.

1098085169 is a deficient number, since it is larger than the sum of its proper divisors (4082371).

1098085169 is an equidigital number, since it uses as much as digits as its factorization.

1098085169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082370.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 1098085169 is about 33137.3681664673. The cubic root of 1098085169 is about 1031.6807851454.

The spelling of 1098085169 in words is "one billion, ninety-eight million, eighty-five thousand, one hundred sixty-nine".