1098389228 has 18 divisors (see below), whose sum is σ = 1944077436. Its totient is φ = 543008224.

The previous prime is 1098389209. The next prime is 1098389233. The reversal of 1098389228 is 8229838901.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14351 + ... + 49017.

It is an arithmetic number, because the mean of its divisors is an integer number (108004302).

Almost surely, 2^1098389228 is an apocalyptic number.

It is an amenable number.

1098389228 is a deficient number, since it is larger than the sum of its proper divisors (845688208).

1098389228 is an equidigital number, since it uses as much as digits as its factorization.

1098389228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34849 (or 34758 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1098389228 is about 33141.9557057214. The cubic root of 1098389228 is about 1031.7760002487.

The spelling of 1098389228 in words is "one billion, ninety-eight million, three hundred eighty-nine thousand, two hundred twenty-eight".