1098672249 has 4 divisors (see below), whose sum is σ = 1464896336. Its totient is φ = 732448164.

The previous prime is 1098672227. The next prime is 1098672287. The reversal of 1098672249 is 9422768901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1098672249 - 2²⁸ = 830236793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1098672198 and 1098672207.

It is not an unprimeable number, because it can be changed into a prime (1098672299) 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, 183112039 + ... + 183112044.

It is an arithmetic number, because the mean of its divisors is an integer number (366224084).

Almost surely, 2^1098672249 is an apocalyptic number.

It is an amenable number.

1098672249 is a deficient number, since it is larger than the sum of its proper divisors (366224087).

1098672249 is an equidigital number, since it uses as much as digits as its factorization.

1098672249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366224086.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 1098672249 is about 33146.2252602012. The cubic root of 1098672249 is about 1031.8646115808.

The spelling of 1098672249 in words is "one billion, ninety-eight million, six hundred seventy-two thousand, two hundred forty-nine".